High density polarized hydrogen gas target for storage rings
作者:
K. Zapfe,
B. Braun,
H.‐G. Gaul,
M. Grieser,
B. Povh,
M. Rall,
E. Steffens,
F. Stock,
J. Tonha¨user,
C. Montag,
F. Rathmann,
D. Fick,
W. Haeberli,
期刊:
Review of Scientific Instruments
(AIP Available online 1995)
卷期:
Volume 66,
issue 1
页码: 28-31
ISSN:0034-6748
年代: 1995
DOI:10.1063/1.1146388
出版商: AIP
数据来源: AIP
摘要:
A target of gaseous polarized hydrogen was formed by injecting polarized hydrogen atoms (produced by Stern–Gerlach spin separation) into a storage cell consisting of a cylindrical tube open at both ends. The target was placed in a storage ring to study the target characteristics (nuclear polarization, target thickness, radiation resistance). A weak transverse guide field (5 G) was applied to define the polarization direction. When atoms in a single hyperfine state were selected, the nuclear polarization of the target was measured to be 0.80±0.02. The areal density of the target under these conditions was (5.5±0.2)×1013H/cm2, while for two spin states (applicable to experiments in high energy rings where a strong magnetic field can be applied to the target) the target thickness was found to be (8.2±0.3)×1013H/cm2. The target polarization was unaffected by prolonged exposure of the target to beams up to 1 mA. ©1995 American Institute of Physics.
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