- Email: [email protected]
Improved circular dichroism instrument in the vacuum ultraviolet
Classified
abstracts
3364-3366
ranged from the order of 10Lo/cm2 at a substrate temperature of 280°C to that of 101*/cm2 at 55°C. Similar results were obtained for a residual gas pressure of 10s4 torr (~10~~ Pa). J R Lloyd and S Nakahara, J Vuc Sci Technol, 14 (l), 1977, 655-659.
37. INORGANIC CHEMISTRY, ANALYTICAL CHEMISTRY, DISTILLATION, MISCELLANEOUS CHEMICAL APPLICATIONS, OIL AND HYDROCARBON TECHNOLOGY
37 3364. Improved circular dichroism instrument in the vacuum ultvaviolet. (USA) The vacuum ultraviolet circular dichroism instrument developed in this laboratory and originally described in 1970 has been modified and improved. The principal modification is the replacement of two lenses by a collimating mirror, thus converting to reflection optics. As a result, the efficiency of the instrument was considerably improved, particularly at wavelengths shorter than 160 nm. The
effectiveness of the polarization optics at short wavelengths was investigated and found to be unimpaired out to 135 nm. K P Gross and 0 Scbnepp, Reu Sci Insrrum, 48 (3), 1977,362-363. 37 3365. Mass spectrometric analysis of sealed electrical contact atmaspherea. (USA) Routine mass spectrometric analysis of 50 PI quantities of gas from dry-reed sealed contacts (STP) has been made at concentration levels of 10 ppma. A simple inlet system was designed to fracture the glass and metal sample container and introduce the gas to the spectrometer in a controlled way. Compositional changes of gases used during manufacture are demonstrated in the final product. Percentage composition of the gas is calculated on a programmable calculator from a knowledge of fragmentation patterns and total ionization cross sections. Gases which have been detected are Hz, He, N2, CH.,, On, HP, Ne, Ar and C02. The technique could easily be extended to samples of 5 ~1 or even smaller. R Schubert, J Voc Sci Technol. 14 (1). 1977,593-595.
95
abstracts
3364-3366
ranged from the order of 10Lo/cm2 at a substrate temperature of 280°C to that of 101*/cm2 at 55°C. Similar results were obtained for a residual gas pressure of 10s4 torr (~10~~ Pa). J R Lloyd and S Nakahara, J Vuc Sci Technol, 14 (l), 1977, 655-659.
37. INORGANIC CHEMISTRY, ANALYTICAL CHEMISTRY, DISTILLATION, MISCELLANEOUS CHEMICAL APPLICATIONS, OIL AND HYDROCARBON TECHNOLOGY
37 3364. Improved circular dichroism instrument in the vacuum ultvaviolet. (USA) The vacuum ultraviolet circular dichroism instrument developed in this laboratory and originally described in 1970 has been modified and improved. The principal modification is the replacement of two lenses by a collimating mirror, thus converting to reflection optics. As a result, the efficiency of the instrument was considerably improved, particularly at wavelengths shorter than 160 nm. The
effectiveness of the polarization optics at short wavelengths was investigated and found to be unimpaired out to 135 nm. K P Gross and 0 Scbnepp, Reu Sci Insrrum, 48 (3), 1977,362-363. 37 3365. Mass spectrometric analysis of sealed electrical contact atmaspherea. (USA) Routine mass spectrometric analysis of 50 PI quantities of gas from dry-reed sealed contacts (STP) has been made at concentration levels of 10 ppma. A simple inlet system was designed to fracture the glass and metal sample container and introduce the gas to the spectrometer in a controlled way. Compositional changes of gases used during manufacture are demonstrated in the final product. Percentage composition of the gas is calculated on a programmable calculator from a knowledge of fragmentation patterns and total ionization cross sections. Gases which have been detected are Hz, He, N2, CH.,, On, HP, Ne, Ar and C02. The technique could easily be extended to samples of 5 ~1 or even smaller. R Schubert, J Voc Sci Technol. 14 (1). 1977,593-595.
95