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

页码：217 / 222

页数：6

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