Multiple‐Gap Magnetic Spectrograph for Charged‐Particle Studies
作者:
H. A. Enge,
W. W. Buechner,
期刊:
Review of Scientific Instruments
(AIP Available online 1963)
卷期:
Volume 34,
issue 2
页码: 155-162
ISSN:0034-6748
年代: 1963
DOI:10.1063/1.1718292
出版商: AIP
数据来源: AIP
摘要:
A spectrograph has been designed that simultaneously records broad‐range, charged‐particle spectra at twenty‐four different reaction angles, 7.5° apart, from 0 to 172.5°. At each angle, the spectrograph records a spectrum with a total energy range of about 2.3:1 and with a resolving power exceedingR=E/&Dgr;E=1000, where &Dgr;Eis the full width at half‐maximum of a peak. The recorders are seventy‐two 2×10 in. nuclear‐track plates, which are developed and scanned under a microscope after the exposures. When half‐millimeter strips across the nuclear‐track plates are scanned, the information contained on the nuclear‐track plates after one exposure corresponds to about 36 000 data points. A typical exposure time with about a 0.5‐&mgr;A beam is of the order of 2 to 3 h.
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