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Proceedings of the 5th National Seminar on SSNTD—1987 (India). Space physics, nuclear physics and earth sceinces
0735-245X/90 $3.00 + .00 Pergamon Press pic
Nucl. Tracks Radial. Meas, Vol 17, No 3, p. 441,1990 1m J. Radial. Appl. InSlrum , ParI D Printed in Great Britain
BOOK REVIEWS
PROCEEDINGS OF THE 5th NATIONAL SEMINAR ON SSNTD-1987 (INDIA). SPACE PHYSICS, NUCLEAR PHYSICS AND EARTH SCEINCES Editor. B. B. BALIGA Published by Saha Institute of Nuclear Physics, 92 A.P.e. Road, Calcutta 700-009, India, viii + 260 pp. (paperback) THIS publication contains almost forty papers which were presented at the 5th National Seminar organised by the Saha Institute of Nuclear Physics in Calcutta. The contributions fall into three distinctive categories, namely space physics, nuclear phystcS and earth sciences. The space physics papers include some of the early results from the Anuradha experiment flown on board Spacelab-3 and several reports on particle identification in polymers and meteoritic crystals. One of these (Sharma et al.) discusses the findings of a study of ultra heavy and super heavy nuclei in Eagle Station and Marjalahti meteorites. Surprisingly, the authors found a U-group abundance in cosmic rays some ten times higher than that in the solar system as well as several superheavy elements including two possible candidates for the Z = 110-+ 115 charge group. The disparity between various experiments in this charge region remind us of the need to increase the world sample through a variety of techniques. This will not be simple In view of the rarity of these nuclei. Papers on the application of SSNTD to nuclear phySICS are confined mainly to environmental measurements and there are three reports on uranium content in plants and human blood. The latter resulted in some interesting trends and showed that the uranium concentration In carcinoma
and leukemia patients was three times higher than in non-diseased persons (Das and Goswami). The final one-third of this admirable publication tS devoted to the invited talks delivered during the 5th National Seminar. They include a general review by S. Biswas of recent advances in nuclear, earth and space sciences, and a contribution by A. K. Ganguly on the application of SSNTD to nuclear physics problems. Other invited talks were by D. B. Isabelle (Biophysics, Medical Science), H S. Virk (Track Annealing Models), K. K. Sharma (Fission Track Dating), R. H. Iyer (Nuclear Track Registration from Solution Media), and A. P. Srivistava (FT Dating of Stratigraphy). Overall, this is a well-produced volume and maintains the high standards of content and presentation which we have come to expect from this excellent series of seminars. DENIS O'SULLIVAN Dublin Institute for Advanced Studies 5 Merrion Square Dublin I Ireland
Reviews Edl/or
CALCULATED EFFECTIVE STOPPING POWERS AND PROJECTED RANGES FOR H, He, C, NAND 0 PROJECTILES (0.05-500 keV) IN SOME ELEMENTS AND MATERIALS OF DOSIMETRIC INTEREST Author: Ihsan A. M. AI-Affan Printed by the South Bank Polytechnic, London SEI OAA, U.K., 170 pp. (paperback), £8.00 U.K. As THE title states, this book presents tables of values, calculated by the author, of projected ranges and stopping powers of various ions in a range of materials. The materials have been carefully selected to cover a wide range of compounds of interest in dosimetry: various tissue equivalent compounds and plastics, including CR-39, and several gases, including air. In previous calculations it has been assumed that recoil ions travel in straight lines inside the medium. The author points out that whereas this assumption is valid for fast ions, for ions with velocity v - e 2/h, or about 25 keY for protons, competition appears between energy-loss to electrons and that to recoil nuclei. As a result, projected ranges can vary significantly from those calculated from continuous slowing down or csda values. The author's own calculatIOns, taking into account the effects of nuclear scattering of ions at low
441
energy, agree well with measured values where these exist. Thus the aim of the book is to complement published csda values in the low and intermediate energy range. In concentrating on the energy range below 500 keY, the author fills a gap where current data are sparse, providing stopping power and range values of particular relevance to recoil ions, for example, from neutron interactions. Thus, the data are of special interest to those calculating doses from occupational neutron exposure, in treatment therapy and studies of radiation damage to RNA and DNA. D. L. HENSHAW H. H. Wills Laboratory University of Bristol Bristol BS8 ITL
u.K.
Nucl. Tracks Radial. Meas, Vol 17, No 3, p. 441,1990 1m J. Radial. Appl. InSlrum , ParI D Printed in Great Britain
BOOK REVIEWS
PROCEEDINGS OF THE 5th NATIONAL SEMINAR ON SSNTD-1987 (INDIA). SPACE PHYSICS, NUCLEAR PHYSICS AND EARTH SCEINCES Editor. B. B. BALIGA Published by Saha Institute of Nuclear Physics, 92 A.P.e. Road, Calcutta 700-009, India, viii + 260 pp. (paperback) THIS publication contains almost forty papers which were presented at the 5th National Seminar organised by the Saha Institute of Nuclear Physics in Calcutta. The contributions fall into three distinctive categories, namely space physics, nuclear phystcS and earth sciences. The space physics papers include some of the early results from the Anuradha experiment flown on board Spacelab-3 and several reports on particle identification in polymers and meteoritic crystals. One of these (Sharma et al.) discusses the findings of a study of ultra heavy and super heavy nuclei in Eagle Station and Marjalahti meteorites. Surprisingly, the authors found a U-group abundance in cosmic rays some ten times higher than that in the solar system as well as several superheavy elements including two possible candidates for the Z = 110-+ 115 charge group. The disparity between various experiments in this charge region remind us of the need to increase the world sample through a variety of techniques. This will not be simple In view of the rarity of these nuclei. Papers on the application of SSNTD to nuclear phySICS are confined mainly to environmental measurements and there are three reports on uranium content in plants and human blood. The latter resulted in some interesting trends and showed that the uranium concentration In carcinoma
and leukemia patients was three times higher than in non-diseased persons (Das and Goswami). The final one-third of this admirable publication tS devoted to the invited talks delivered during the 5th National Seminar. They include a general review by S. Biswas of recent advances in nuclear, earth and space sciences, and a contribution by A. K. Ganguly on the application of SSNTD to nuclear physics problems. Other invited talks were by D. B. Isabelle (Biophysics, Medical Science), H S. Virk (Track Annealing Models), K. K. Sharma (Fission Track Dating), R. H. Iyer (Nuclear Track Registration from Solution Media), and A. P. Srivistava (FT Dating of Stratigraphy). Overall, this is a well-produced volume and maintains the high standards of content and presentation which we have come to expect from this excellent series of seminars. DENIS O'SULLIVAN Dublin Institute for Advanced Studies 5 Merrion Square Dublin I Ireland
Reviews Edl/or
CALCULATED EFFECTIVE STOPPING POWERS AND PROJECTED RANGES FOR H, He, C, NAND 0 PROJECTILES (0.05-500 keV) IN SOME ELEMENTS AND MATERIALS OF DOSIMETRIC INTEREST Author: Ihsan A. M. AI-Affan Printed by the South Bank Polytechnic, London SEI OAA, U.K., 170 pp. (paperback), £8.00 U.K. As THE title states, this book presents tables of values, calculated by the author, of projected ranges and stopping powers of various ions in a range of materials. The materials have been carefully selected to cover a wide range of compounds of interest in dosimetry: various tissue equivalent compounds and plastics, including CR-39, and several gases, including air. In previous calculations it has been assumed that recoil ions travel in straight lines inside the medium. The author points out that whereas this assumption is valid for fast ions, for ions with velocity v - e 2/h, or about 25 keY for protons, competition appears between energy-loss to electrons and that to recoil nuclei. As a result, projected ranges can vary significantly from those calculated from continuous slowing down or csda values. The author's own calculatIOns, taking into account the effects of nuclear scattering of ions at low
441
energy, agree well with measured values where these exist. Thus the aim of the book is to complement published csda values in the low and intermediate energy range. In concentrating on the energy range below 500 keY, the author fills a gap where current data are sparse, providing stopping power and range values of particular relevance to recoil ions, for example, from neutron interactions. Thus, the data are of special interest to those calculating doses from occupational neutron exposure, in treatment therapy and studies of radiation damage to RNA and DNA. D. L. HENSHAW H. H. Wills Laboratory University of Bristol Bristol BS8 ITL
u.K.