X-RAYS FROM ANTIPROTONIC HE-3 AND HE-4

被引：30
|
作者：
SCHNEIDER, M
BACHER, R
BLUM, P
GOTTA, D
HEITLINGER, K
KUNOLD, W
ROHMANN, D
EGGER, J
SIMONS, LM
ELSENER, K
机构：
[1] PAUL SCHERRER INST,CH-5232 VILLIGEN,SWITZERLAND
[2] CERN,CH-1211 GENEVA 23,SWITZERLAND
[3] UNIV KARLSRUHE,KERNFORSCH ZENTRUM KARLSRUHE GMBH,INST EXPTL KERNPHYS,W-7500 KARLSRUHE 1,GERMANY
来源：
ZEITSCHRIFT FUR PHYSIK A-HADRONS AND NUCLEI | 1991年 / 338卷 / 02期
关键词：
D O I：
10.1007/BF01284797
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Antiprotonic X-rays from the helium isotopes have been observed at pressures of 36, 72, 375 and 600 mbar. The antiproton beam from LEAR with momenta of 309 and 202 MeV/c has been stopped at these pressures using the cyclotron trap. The X-rays were detected with Si(Li) and intrinsic Ge semiconductor detectors. Absolute X-ray yields were determined and the strong-interaction 2 p shifts and the 2 p and 3 d broadenings measured to be epsilon-2-p = (-17 +/- 4) eV, GAMMA-2-p = (25 +/- 9) eV and GAMMA-3-d = (2.14 +/- 0.18) meV for pBAR He-3 and epsilon-2-p = (-18 +/- 2) eV, GAMMA-2-p = (45+/-5) eV and GAMMA-3-d = (2.36 +/- 0.10) meV for pBAR He-4.
引用
收藏
页码：217 / 222
页数：6
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