Production of heavy hypernuclei in the p+Bi reaction and determination of their lifetime for fission induced by Λ decay

被引：36

作者：

Kulessa, P ^{[1
]}

Rudy, Z

Hartmann, M

Pysz, K

Kamys, B

Zychor, I

Ohm, H

Jarczyk, L

Strzalkowski, A

Cassing, W

Hodde, H

Borgs, W

Koch, HR

Maier, R

Prasuhn, D

Matoba, M

Schult, OWB

机构：

[1] Forschungszentrum, Inst Kernphys, D-52425 Julich, Germany

[2] Jagiellonian Univ, M Smoluchowski Inst Phys, PL-30059 Krakow, Poland

[3] Andrzej Soltan Inst Nucl Studies, PL-05400 Swierk, Poland

[4] Univ Giessen, Inst Theoret Phys, D-35392 Giessen, Germany

[5] Univ Bonn, Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[6] Kyushu Univ, Dept Nucl Engn, Fukuoka 812, Japan

来源：

PHYSICS LETTERS B | 1998年 / 427卷 / 3-4期

关键词：

D O I：

10.1016/S0370-2693(98)00397-9

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The production of ii hypernuclei was studied in proton reactions with Pi nuclei and the lifetime of the produced heavy hypernuclei was measured by the observation of delayed fission using the recoil shadow method, The measurements were performed at 1.9 GeV proton energy whereas the background was determined at 1.0 GeV. From the distribution of the fission fragments in the shadow region the lifetime tau = [161 +/- 7(statist,) +/- 14(system.)lps was obtained and from a comparison of counting rates of prompt and delayed fission fragments the production cross section of hot Lambda hypernuclei was determined to be (350 +/- 140) mu b. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：403 / 408

页数：6

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