Results of the international survey on particle tracks in solids

0735-245X/91 $3.00 + .00 Pergamon Press pic

Nucl. Tracks Radiat. Meas., Vol. 19, Nos I--4,pp. 835--842,1991 Int. ,I.Rad~t. AppL Inatrum.,Part D

Printedin Great Britain

RESULTS

OF THE INTERNATIONAL

SURVEY

ON PARTICLE T R A C K S

IN SOLIDS

D. A z i m i - G a r a k a n i

Radiation Hygiene Division, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland.

ABSTRACT The summary of the rcsult.°• of the 1990 International Survey on Particle Tracks in Solids performed it, collaboration with the International Nuclear Track Society is presented. These results include the data on principal investigator(s), collaborator(s), institute, field of applicatlon(s), materials(s), and method(s) of track observation from 28 countries. INTRODUCTION Three decades after thc first observation of radiation damage in insulating materials (Young, 1958), the technique is widely used in very diversed fields such as archaeology, biology, geology, materials science, medicine, radiation protection, and space physicei in many laboratories around the world. The first survey on track registration carried out nearly 20 years ago (Griffith, 1973). In order to have more recent information o n the applications of particle tracks in solids and to put the researchers involved in ithis field, especially those in and from developing countries, in closer contact with each other, the International S u r v e y on Particle Tracks in Solids initiated in cooperation: with the International Nuclear Track Society. The Questionnaires were prepared in early. 1990, and distributed world-wide together with the 3rd Circular of the 15th International Conference on Particle Trucks J, Solids in June 1990. This paper presents the extract of the replies received by the cad of 1990. The deLailed results will be reported elsewhere. .REFERENCES Griffith, R.V. (1973). Results of the 1972 Survey on Track Registration. ~ Lawrence Livermo1~c National Laboratory Rcyort, UCRL-51369. University of California, Livermore. Young, D.A. (1958). Etchitlg of Radiation Damage in Lithium Fluoride. Nature, 182, 375-37;/. A C K N O W L EDGEbIENTS The cooperation of Prof'. Dr. Brandt, President of the International Nuclear Track Society, and all the scientists who participated in this international survey and provided veduable information is gratefully acknowledged. This work financially supported by the Swiss Federal Nuclear Safety Inspcctorate. ALGERIA Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Saleh Djeffal Centre of Radioprotection and Safety, 02, Bd F. Fanon, B.P. 1017, Alger D. E. Cherouati, F. Djouider, bi..Chalal, Z. Lounis Radon Dosi,,cLry, ruder, in soil, neutron dosimetry CR-39 (Pershore), LR-115 (Kodak-Pathd) Opti~ml mJ,:roscope, spark counter, image analyzer

ARGENTINA InvcsLigato,,(s): Omar A. B¢:r~,.tol:t Institute: ComislotlNaciomd dc Encrgia' Atomica,'Av. d~:l Libertador 8250, Bs., As. 1429 Collaborator{s): R. blazzei, G. Saint Martin, J. C. Grasso Application(s): Track analysis at submicroscopic level Material(s): blakrofol E {Bayer AG) Observatiot,: Optical microscope, TEbl m tesu,~m

835

836

D. AZIMI-GARAKANI BANGLADESH

Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Gazi S e r a j u l Islam Rajshahi U n i v e r s i t y , Department of Physics, Rajshahi 6205 M. Aminul Islam Radon measurements CR-39 (Pershore) Research microscope

CANADA I n v e s t i g a t o r ( s ) : R. P. Bradley Institute: Bureau of Radiation and Medical Devices, Head, Dosimetry Section, 776 Brookfield Road, Ottawa, Ontario KIA lCi Collaborator (s): F. N. Ryan (Head, Applied Instrumentation Unit) Application ( s ): Neutron dosimetry {occupational monitoring) Material(s): CR-39 (American Acrylics) Observation: Image Analysis Software Gade-Data Investigator(s): Institute: Application(s): Material(e): Observation:

Georges S. Poirier Atomic E n e r g y Control Board, P. O. Box 1046, Ottawa, Ontario KIP 5S9 Regulation of atomic radiation in Canada CR-39 (American Acrylics) Image Analysis Software Gade-Data

CHINA Investigator(s): Yang Yurong (i) and Qiu Kaixian (2) Institute: (1) State Seismological Bureau, Centre for Analysis & Prediction, 63 Fuxing Avenue, Beijing; (2) Seismological Bureau of Si Chuen Province, Cheng Du Collaborator(s): E. Xiuman Application(s): Earthquake prediction Material(s): Polycarbonate (Chao Yang Plastic Factory) Observation: Microscope CZECHOSLOVAKIA Investigator(s): Institute: Collaborator (s ): Application ( s): Material(s): Observation:

Jim Charv~t Institute of Radiation Dosimetry, Na Truhl~rce 39/64, 180 86 Praha 8 F. S p u m y , J. Havlenov~, B. Kopeck~ Space radiation dosimetry, neutron dosimetry, plasma charged particle measurements, microdosimetry, radon dosimetry CR-39 (Pershore, Tastrak, MAND), CN-85 (Kodak-PathS) Eye counting, automatic image analyzer

Investigator(s): Frantisek S p u m y Institute: Institute of Radiation Dosimetry, Na Truhl~rce 39/64, 180 86 Praha 8 Collaborator (s): Jim Charv~t, Karel Turek, N. Simunkov~, Ivan Voiockov~ Application(s): Neutron dosimetry, high energy charged particle detection, space radiation dosimetry, microdosimetry Material(s): CN-85, LR-115 (Kodak-PathS), CR-39 (Pershore}, Melinex O Observation: Eye counting, automatic image analyzer I n v e s t i g a t o r (s): Institute: Collaborator( s): Application(s): Material(s): Observation:

Karel Turek Institute of Radiation Dosimetry, Na Truhl~rce 39/64, 180 86 Praha 8 J. Bedn~r, F. S p u m y , N. Simunkov~ Neutron and radon dosimetry, methodology of electrochemical etching CR-39 (Pershore, Patras, Tastrak, MAND) Projection microscope, image a n a l y z e r

DENMARK Investigator(s): Institute: Application(s): Material(s): Observation:

Anders Damkjaer Technical University of Denmark, Dept. of Electrophysics, DK-2800 Lyngby Radon-222 doalmetry LR-115 II (Kodak-Pathd) Automatic image analysis

I n v e s t i g a t o r (s }: Benny Majborn Institute: Ris¢ National Laboratory, DK-4000 Roskilde Application (s): Radon measurements, neutron dosimetry Material(s): CR-39 {Pershore) Observation: Microscope, automated counting

SURVEY ON PARTICLE TRACKS IN SOLIDS

837

ECUADOR Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

B. Flores, J. Idrovo, I~ Cazar, S. Alvarez E S P O C H ,Laboratorio de T6cnicas Nucleares, P.O. Box 4703, Riobamba B. Torres, A. Vailejo Radioprotection, u r a n i u m mines a n d e a r t h q u a k e prediction LR-115 (Kodak-PathS) Spark counter

FRANCE Investigator(s): Institute: Application(s): Material( s): Observation:

Remi Barillon, Didier Klein Lab. de Microanaiyses Nucl., La Bouloie, 16, r. de Gray, F-25030 Besan~on Radon dosimetry LR-115 (Kodak-PathS), CR-39 (Tastrak) Automatic (LR-115), semiautomatic (CR-39)

Investigator(s): Institute: Application (s): Material(s): Observation:

R. M~dioni, J. M. Bordy Commissariat R l'Energie Atomique, DPT-SIDR, F-92265 F o n t e n a y - a u x - R o s e s Criticality accident dosimetry CR-39 (American Acrylics, Bristol, I n t e r c a s t ) Light t r a n s m i s s i o n (spectrophotometry)

Investigator(s): Institute: Collaborator (s): Application ( s): Material(s): Observation:

Michel Monnin Lab. d'Hydrogdoiogie-URA 1359, Place E. Bataillon, F-34095 Montpellier Cedex J. L. Seidel Radon measurements LR-115 (Kodak-PathS), CR-39 (Pershore) Jumping s p a r k c o u n t e r , image a n a l y z e r

Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

J. F. Pineau, A. Rannou COGEMA/CRPM/DIA, Lab. d ' I n s t r u m e n t a t i o n , Fanay, F-87240 S a i n t - S y l v e s t r e M. J a n o t Dosimetry of Rn-222 a n d Rn-220 decay p r o d u c t s LR-115 (Kodak-Pathd) Optical t r a n s m i s s i o n

GERMANY Investigator(s): Wolfgang Birkholz, Carol- Winkler Leipzig Univ. of Tech., Dept. of Natural Sciences, P.B. 66, D-7030 Leipzig Institute: Collaborator (s): Joint I n s t i t u t e of Nuclear Research Dubna, Central I n s t i t u t e for Isotope and Radiation Research Leipzig Application (s): Neutron dosimetry CR-39 (Patras) Material(s): Optical microscope Observation: I n v e s t i g a t o r ( s): Institute: Collaborator (s): Application (s): Material(s): Observation:

B. DSrachel, G. Streubel, P. Schmidt, H. Hartmann Dresden Tech. Univ., Phys. Dept., Div. on Rad. Prot. Phys., D-8027 Dresden A. Guhr ( I n d e p e n d e n t Lab. for Radiation Measurements, Pf 23, Berlin 1100) Neutron dosimetry, detection of radon a n d radon decay p r o d u c t s CR-39 (Patras) Visual evaluation by eye

Investigator{s): Karl-Ontjes E. Groeneveld Goethe Universitiit, I n s t i t u t fiir Kernphysik, D-6000 F r a n k f u r t / M a i n 90 Institute: Application(s): Particle t r a c k related electron emission from ion p e n e t r a t i o n t h r o u g h solids Investigator{s): Institute: Collaborator{ s ): Application(s): Material{ s): Observation:

Andreas Guhr I n d e p e n d e n t Lab. for Radiation Meas., Pf 23, Berlinerstr. 12, D-U00 Berlin Olaf Sarenio Personal & e n v i r o n ' l dosim., n e u t r o n r a d i o g r a p h y , low-level i n v e s t i g a t i o n s Patras (ILR a n d Rathenower Optical Works GmbH, Germany) Light microscope

Investigator(s): Institute: Collaborator (s): Material(s): Observation:

S. Klaumiinzer H a h n - M e i t n e r - I n s t i t u t Berlin GmbH, P. O. B. 390128, D-IO00 Berlin 3 9 W. P e t t y (ILL, Grenoble) Pd80Si20 Small angle n e u t r o n s c a t t e r i n g at 300 K

Investigator(s): A. J. Khan Institute: Institut for Biophysik, Universit~t des Saarlandes, D-6650 Homburg/Saar

838

D. AZIMI-GARAKANI

Collaborator (s): Application (s): Material(s): Observation:

G. Keller Radon a n d d a u g h t e r s measurements in the e n v i r o n m e n t Makrofol DE 1-4 (Bayer) Image a n a l y z e r

Investigator(s): Institute: Application ( s ): Material( s ): Observation:

B. Lommler, R. Simmer, E. Pitt, A. S c h a r m a n n I. Physikalisches I n s t i t u t , Heinrich-Buff-Ring 16, D-6300 Giessen Track formation analysis, ECE, fast n e u t r o n dosimetry CR-39 (American Acrylics) Electro-optic

Investigator(s): Institute: Collaborator(s): Application ( s):

Herwing G. Paretzke GSF, D-8042 N e u h e r b e r g Stefan Henss, Keith Long Theoretical i n v e s t i g a t i o n s u s i n g l i t e r a t u r e data into the basic mechanisms for c h a r g e d particle t r a c k formation, development and r e g i s t r a t i o n All detector materials

Material(s):

GREECE Investigator(st: Institute: Collaborator(s): Application(s): Material(s): Observation:

M. Zamani-Valassiadou Univ. of Thessaloniki, Nuclear Physics Dept., Thessaloniki 54006 Stef. Charaiambous, E. Savvidis, D. Sampsonidis Nuclear reactions, neutron dosimetry CR-39 (Pershore), CN-85 (Kodak-PathS) Microscope, automatic image processing

HUNGARY Investigator(s): Institute: Coliaborator (s): Application(s): Material(s): Observation:

I s t v a n Csige, Ilona Hunyadi I n s t i t u t e of Nuclear Research, Pf 51, H-4001 Debrecen Inst. of Biomedical Problems (Moscow), I n s t . of Radiation Dosim. (Praque) Cosmic r a y heavy ion measurements CR-39: MA-ND/a (MOM, Budapest) Optical microscope, image a n a l y z e r

Investigator(s): Institute: Application(s ): Material(s):

Ilona Hunyadi, Josef Hakl I n s t i t u t e of Nuclear Research, Pf 51, H-4001 Debrecen Environmental alpha r a d i o g r a p h y a n d r a d o n measurements LR-115 II (Kodak-PathS), btA-ND/a (Hungary)

Investigator(s): Institute: Application ( s): Material(s):

S u s a n n e Kocsis Inst. fiir Radiochemie u n d Physik, Veszprdm Univ., Pf 158, H-8200 Veszpr~m Alpha a u t o r a d i o g r a p h y CR-39

Investigator(s): Institute: Collaborator(s): Application(s):

L. Medveczky I n s t i t u t e of Nuclear Research, P. O. Box 51, H-4001 Debrecen A. Fenyvesi, J. Hakl Neutrons

Investigator(s): J. Palfavi Institute: Central Research I n s t i t u t e for Physics of the Hungarian Academy of Sciences (HAS), P. O. Box 49, H-1525 Budapest 114 Collaborator{ s): I n s t i t u t e of Isotopes of HAS, Nuclear Power Station of Paks Application(s): Radon dosimetry, n e u t r o n emission from s p e n t reactor fuels CR-39: IKA-ND/p a n d btA-ND/a (MOM, Hungary}, LR-115 (Kodak-PathS) Material(s ): Optical microscope with image a n a l y z e r Observation: INDIA Investigator(s): Institute: Material(s): Observation:

K. K. Dwivedi N o r t h - E a s t e r n Hill U n i v e r s i t y , Department of Chemistry, ShiHong 793003 CR-39, Lexan, LR-115 Microscope

Investigator(s): Institute: Coliaborator( s): Application ( s): Material{s): Observation:

R a j e n d r a Prasad Aligarh Muslim Univ., Applied Physics Dept., College of Eng., AHgarh R. K. Tyagi Radon dosimetry, trace u r a n i u m a n d boron analysis, fission s t u d i e s CR-39, Makrofol (N, KG, KL), Lexan, Glass, Melinex-O Optical microscope

SURVEY ON PARTICLE TRACKS IN SOLIDS Investigator(s): Institute: Collaborator(s): Application(st:

Material(st: Observation:

H. S. Virk

Guru Nanak Dev U n i v e r s i t y , Physics Department, Amritsar 143005 GSI, Darmstadt (R. Spohr), S. Singh, G. Singh, M. Singh, N. P. Singh Nuclear geophysics, radiation p h y s i c s CR-39 (UK), Lexan (USA), LR-115 (Kodak-PathS)

Optical microscope

ITALY I n v e s t i g a t o r ( s 1: G. Baroni, S. Di Liberto, M. ;L Mazzoni, F. Meddi, G. Rosa, T. Virgili Institute: U n i v e r s i t y of Rome & INFN, Dip. di Fisica, Piazza A. Moro, 2, 1-00185 Roam Collaborator (s): A. M. Cecchetti, C. Sgarbi, C. Cattaneo, M. Federici, R. Diotallevi Application (s): Emulsions a n d plastics in high e n e r g y p h y s i c s experiments Material(s ): CR-39 (Tastrak, I n t e r c a s t ) Observation: Automatic image a n a l y z e r Investigator{ s): Institute: Collaborator(s ): Application (s): Material(s): Observation:

R. Bonetti UniversitA di Milano, I s t i t u t o di Fisica, Via Celorla, 16, 1-20133 Milano C. Migliorino, C. Chiesa, Exotic radioactivity, r a d o n dosimetry BP1 (Schott Glass Technologies) Microscope

Investigator{ s): Giulio Bigazzi Institute: I s t i t u t o di Geocronologia e Geochimica Isotopica, Via Maffi, 36, 1-56127 Pisa Collaborator(s): Pio Norelii Application (s): Fission t r a c k dating Material(s): Natural apatite, n a t u r a l glass Observation: Optical microscope I n v e s t i g a t o r ( st: Institute: Collaborator (s): Application ( s): Material(s): Observation:

Luclano Lembo ENEA, Viale Ercolani, 8, 1-40138 Bologna O. Civolani, M. Beozzo P e r s o n n e l dosimetry CR-39 (American Acrylics) Optical microscope, image a n a l y z e r

Investigator(st: Institute: Collaborator ( s): Application(st: Material(s): Observation:

Paolo Pasquinelli CRESAM, Ministero Difesa, S. Piero a Grado, 1-56010 Pisa G. Di Pretoro, L. Gambini (CRESAM) Radiotoxicology and r a d o n correlation with c a n c e r CR-39 {Tastrak) Image a n a l y z e r

Investigator(st: Institute: Collaborator ( s): Application ( s): Material(s): Observation:

L. Tommasino, G. Torri ENEA-DISP, Laboratorio di Misure, Via V. Brancati, 48, 1-00144 Roma Michele Riccardi Neutron a n d radon dosimetry LR-115 (Kodak-PathS), CR-39 ( I n t e r c a s t , American Acrylics) Image a n a l y z e r , s p a r k c o u n t e r

JAPAN Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Tsuguo Nishikawa, Masayoshi Aoki F u k u i Univ., Faculty of Eng., Dept. of Applied Physics, Bunkyo, F u k u i 910 S h i g e r u Okabe Measurement of n a t u r a l a l p h a - r a y flux i n t e n s i t y TS-16 (Tokuyama Soda, Japan) Microscope

MALAYSIA Investigator(st: Institute: Application( s ): Material(s):

Yusoff M. Amin, Rosli H. Mahat Univ. of Malaya, Dept. of Phys., Nuclear Track Lab., 59100 Kuala Lumpur Radon (indoor a n d soil)

Investigator(s): Institute: Collaborator (s): Application( e): Materlal(s): Observation:

I n n Khuan Ng Nucl. E n e r g y Unit, Prime Minister's Dept. PUSPATI, 43000 Kajang, Selangor Ah Auu Gui Fission t r a c k dating Muscovite mica {Essex I n t e r n a t i o n a l , Mass., USA) Optical microscope

LR-I15, CR-39

839

840

D. AZIMI-GARAKANI MEXICO

Investigator{s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Miguel Balcazar Inst. Nacional de I n v e s t i g a c i o n e s Nucl., Ap. Post. 18-1027, Mexico D. F. 11801 L. Tavera, M.E. Camacho, N. Segovia, A. Chavez, J.Nieto, E. Tamez, P. Pefia Neutron dosimetry, r a d o n LR-115 (Kodak-PathS), Makrofol (Bayer), CR-39 (Pershore) Image analyzer, s p a r k c o u n t e r

Investigator{ s ): Institute: Collaborator(s): Application (s): Material(s): Observation:

Guillemo Espinosa I n s t i t u t o de Fialca, UNAM, Ap. Post. 20-506, Sn. Aligel., Mexico D.F. 01000 Victor Castafio, Jose I. Golzarri P e r s o n n e l dosimetry, radon, e n v i r o n m e n t a l , i n s t r u m e n t a t i o n & material sci. CR-39 (Pershore) Optical microscope and Inovion plus PC

Investigator(s): Institute: Collaborator (s): Application(s): Material(s): Observation:

Nuria Segovia Inst. Nacional de I n v e s t i g a c i o n e s Nucl., Ap. Post. 18-1027, Mexico D. F. 11801 E. Tamez, P. Pefia, S. Bulbulian, M. T. Orguin, M. Balcazar, A. Chavez Radon LR-115 (Kodak-PathS) Spark

PAKISTAN

Investigator(s): Institute: Application(s): Material(s):

Mansoor Ahmad, Ziafat Hussain, Abdul Majeed, Farah Mansoor I n s t i t u t e of I n d u s t r i a l Automation, P. O. Box 1384, Islamabad Radon measurement, estimation of u r a n i u m in air CR-39

Investigator(s): Institute: Collaborator (s): Application(s): Material(s):

Hameed Ahmad Khan PINSTECH, Head, SSNTD Laboratories, Nilore, Islamabad R. Brandt (Germany) Neutron dosimetry, radon monitoring, heavy ion interactions CR-39 (Homalite Corp., USA)

RUMANIA

I n v e s t i g a t o r {s): Institute: Collaborator(s): Application (s): Material{s): Observation:

Aria Danis Institute of Physics and Nuclear Eng., P. O. Box 5206, Bucharest Mariana Ciubotariu Ddating, fissionable elements (U, Th} distribution and content measurements, neutron fluence measurements, nuclear physics research Muscovite mica, natural minerals Optical microscope

Investigator(s): Alin Dragu Institute: Institute of Physics and Nuclear Eng., P. O. Box 5206, Bucharest Application(s): Neutron and radon calibration, dosimetry; alpha spectrometry, dosimetry Material(s): LR-115 (Kodak-Path4) Observation: Optical microscope

Investigator{s): Dumitru Hasegan Institute: Institute of Gravity and Space Sciences, IFA, P.O. MG6, R-76900 Bucharest Application(st: Cosmic ray detection and measurements for physics and biophysics, heavy ion detection Material(s): CN-85, Melinex {Kodak-Path4) Observation: Optical microscope SAUDI ARABIA Investigator(s): Faiah Abu-Jarad Institute: King Fahd University of Petroleum and Minerals Research Institute/ERL, P. O. Box 2020, Dhahran 31261 Application(s): Radon and neutron doalmetry Material(s): CR-39 (Pershore) Observation: Slide projector, image analyzer

SURVEY ON PARTICLE TRACKS IN SOLIDS

841

SENEGAL Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Adams Tidjani Lab. dee DSTN, Facult~ des Sciences, Universit~ CAD de Dakar, D a k a r - P a n n Anciet O. Dasilva Geophysics, dosimetry LR-U5, CN-85 (Kodak-PathS), CR-39 (UK), SR86 (Japan), Chau Yang (China) Spark counter, microscope, image analyzer

S O U T H AFRICA Investigator(s): Institute: Application( s): Material(s): Observation:

A. Steyn, A. H. Leuschner, R. Strydom Atomic E n e r g y Corporation Ltd., P. O. Box 582, Pretoria 0001 Indoor a n d outdoor r a d o n monitoring Makrofol E (Bayer, South Africa) Semiautomatic c o u n t i n g

I n v e s t i g a t o r ( s): Institute: Collaborator (s): Application(s): Material(s): Observation:

G. P. De Beer Atomic E n e r g y Corporation Ltd., P. O. Box 582, Pretoria 0001 M. C. B. Stair, A. Meintjes Neutron dosimetry CR-39 (American Acrylics) Microfiche reader, image a n a l y z e r

SWITZERLAND Investigator(s): Institute: Application(s): Material(s): Observation:

D. Azimi-Garakani, M. Boschung, C. Schuler, C. Wernli Paul S c h e r r e r I n s t i t u t e , Radiation Hygiene Division, CH-5232 Villigen PSI Neutron dosimetry, radon dosimetry CR-39 (different m a n u f a c t u r e r s ) , polycarbonate, Makrofol Image analysis system, s p a r k c o u n t e r

TAIWAN Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Tsung-Kwei Liu National Talwan U n i v e r s i t y , I n s t i t u t e of Geology, 245 Choushan Rd., Talpei Shlang-Huei Jlang (Dept. of Nuclear Eng., National Tsin-Hua University) Geochronology (thermal a n d tectonic h i s t o r y of mountain belts a n d s e d i m e n t a r y basins, volcanics) Muscovite mica (Nihon-Shoji, Osaka, Japan) Microscope (oil immersion)

TURKEY Investigator(s): Institute: Collaborator (s): Application(s): Material(s):

Oya Yazici Bogazici Univ., Kandilll Observatory, Dept. of Geophysics, 81220 GengelkSy Naoto Oshivar (Nihar U n i v e r s i t y , Tokyo, Japan) LR-115 (K0dak-Path~) Microscope

Investigator(s): Institute: Application(s): Material(s): Observation:

Zehra Yegingil Qukurova Univ., Dept. of Physics, Faculty of Arts & Sci., Adana 01330 Measurement of radon, thoron and their decay products LR-115 (Kodak-Pathd), CR-39 (Pershore) Optical microscope

UK Investigator(s): Institute: Collaborator(s): Application( s ): Material(s): Observation:

D. T. Bartlett National Radiological Protection Board, Chilton, Didcot, Oxon OXll 0RQ R. J. Tanner, J. D. Steele, S. M. Williams Neutron dosimetry CR-39 {Pershore) Automated image analysis system

I n v e s t i g a t o r ( s ) : Denis L. Henshaw Institute: Univ. of Bristol, H. H. Wills Physics Lab., Tyndall Avenue, Bristol BS8 ITL Application( s ): Biomedical-related r e s e a r c h , radon monitoring, use of T a s t r a k for teaching radioactivity in schools, n e u t r o n dosimetry a n d laser fusion p h y s i c s Mater~(s): CR-39 (Tastrak, Bristol) 0 bservaUon: Image analysis s y s t e m

842

D. AZIMI-GARAKANI

I n v e s t i g a t o r ( s ) : G. N. Macro Institute: Defense Radiologioal Alverstoke, Cosport, Application(s): Neutron dosimetry Material(s): Tastrak (TASL), PN3 Observation: CCD, Image a n a l y s i s

Protection Service, I n s t i t u t e of Naval Medicine, Hante, Portsmouth PO12 2DL (Vinten) package

Investigator(s): Institute: Application(s): Material(s):

Abdul Majeed Univ. of Birmingham, School of Phys. & Space IRes., Birmingham B15 2TT Neutron dosimetry a n d s p e c t r o s c o p y CR-39 (Pershore)

Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

J. Miles National Radiological Protection Board, Chilton, Didcot, Oxon OXll 0RQ K. Whysall Radon monitoring CR-39 (Pershore) Automatic

Investigator(s): Institute: Collaborator(s): Application{s): Material(s): Observation:

R. J. T a n n e r National Radiological Protection Board, Chilton, Didcot, Oxon OXll 0RQ D. T. Bartlett, J. D. Steele, S. M. Williams Neutron dosimetry CR-39 (Pershore) Automated image a n a l y s i s system

USA Investigator(s): Institute: Collaborator(s): Application(s): Material(s): Observation:

Nisy Ipe Stanford Linear Accelerator Center, Rad. Phys. Group, P.O.B. 4349, CA 94309 James Liu Neutron dosimetry CR-39 ( d i f f e r e n t m a n u f a c t u r e r s ) Automatic a n d manual c o u n t i n g

I n v e s t i g a t o r ( s ) : Robert Katz Institute: U n i v e r s i t y of Nebraska, Lincoln, NE 68588-0111 Application{s): Theory of t r a c k s t r u c t u r e Investigator(s): Institute: Application(s): Material{s): Observation:

Robert Pollock Radon Environmental Monitoring, 3334 Commercial Ave., Northbrook, IL 60062 Radon monitors CR-39 (American Acrylics) Semi-automatic optical system

Investigator(s): Institute: Collaborator ( s ): Application(s): blaterial(s): Observation:

William C. Tetley Rad-X Ltd., 719 E Genesee St., S y r a c u s e , NY 13210 Daniel R. Westcott, Bruce A. Cummings Radon p r o g e n y u l t r a f i n e size d i s t r i b u t i o n measurement (<20 nm) CR-39 {American Acrylics) Microscope

USSR

I n v e s t i g a t o r (s): Institute: Collaborator (s): Material(s): Observation:

Gabriele Andr/~ssy Joint Inst. for NucL Res., Lab. of Nucl. Reactions, POB 79, I01000 Moscow Manferd Danziger Lavasn (USSR), Mostaphan, Makrofol Measurements of electrical conductivity

Investigator{s): Valentin Pavtov Institute: Preslavl Branch of Gosnifchfmfotoproect Jaroslavl reg., a/j 47, SU-152140 Pereslavl-Zaleasky Application{s): Polarization of cellulose nitrate detectors

I n v e s t i g a t o r ( s ) : V. P. P e r e l y g i n Institute: Joint I n s t i t u t e for Nuclear Research, Dubna, P. O. Box 79, 101000 Moscow Collaborator{s): R. Brandt, Marburg; H. Crawford, Berkeley; C. Perron, Lab Mineralugie, Paris; G. Kurat, Nat. Hist. Museum, Vienna; O. O t g o n s u r e n , Univ. Ulan Bator Application{s): Nuclear physics, galactic cosmic rays, meteorites, track age, element microanalysis and mapping Material(s): Olivine, mica, apatites Observation: Optical microscope