NEW ISOTOPES FROM KR-78 FRAGMENTATION AND THE ENDING POINT OF THE ASTROPHYSICAL RAPID-PROTON-CAPTURE PROCESS

被引：110

作者：

BLANK, B

ANDRIAMONJE, S

CZAJKOWSKI, S

DAVI, F

DELMORAL, R

DUFOUR, JP

FLEURY, A

MUSQUERE, A

PRAVIKOFF, MS

GRZYWACZ, R

JANAS, Z

PFUTZNER, M

GREWE, A

HEINZ, A

JUNGHANS, A

LEWITOWICZ, M

SAUVESTRE, JE

DONZAUD, C

机构：

[1] UNIV WARSAW,INST EXPTL PHYS,PL-00681 WARSAW,POLAND

[2] TH DARMSTADT,INST KERNPHYS,D-64289 DARMSTADT,GERMANY

[3] GRAND ACCELERATEUR NATL IONS LOURDS,F-14021 CAEN,FRANCE

[4] CTR ETUD BRUYERES LE CHATEL,F-91680 BRUYERES CHATEL,FRANCE

[5] GESELL SCHWERIONENFORSCH MBH,D-64291 DARMSTADT,GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.74.4611

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

In an experiment at the SISSI/LISE facility of GANIL, we used the projectile fragmentation of a 78Kr primary beam at 73 MeV/nucleon to produce new isotopes of astrophysical interest. We obtained clear evidence for the existence of the five new isotopes 60Ga, 64As, 69,70Kr, and 74Sr. However, we did not find any evidence for 69Br, whereas comparable nuclei were observed with more than 1000 counts. The isotope 69Br is thus deduced to be a proton-unbound nucleus with a half-life shorter than about 100 ns. The influence of these results on our understanding of the astrophysical RP process is discussed. © 1995 The American Physical Society.

引用

页码：4611 / 4614

页数：4

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