Particle stability of {sup 69}Br

Journal Article · Sat Apr 01 04:00:00 EST 1995 · Bulletin of the American Physical Society

OSTI ID:374996

Pfaff, R; Benenson, W; Fauerbach, M ^[1]

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1. and others

The nucleus {sup 69}Br was first identified in a search for the termination point of the rp-process. The fragmentation of 65 MeV/nucleon {sup 78}Kr by {sup 58}Ni produced a few events identified as {sup 69}Br. However, no particles were identified as {sup 69}Br in a recent experiment at GANIL that used the fragmentation of {sup 78}Kr at 73 MeV/nucleon. One possible explanation for the latter null result is that the {sup 69}Br half-life is very short and the much longer flight path at the GANIL facility allowed the decay of the {sup 69}Br nuclei. To explore this hypothesis an experiment was carried out at a slightly higher beam energy than that used previously. The fragments from the {sup 78}Kr + {sup 58}Ni reaction at 75 MeV/nucleon were identified at two positions along the beamline separated by {approximately}7.5m. Preliminary results indicate that no {sup 69}Br nuclei were observed at either position. This seems to indicate that {sup 69}Br is not particle stable.

• OSTI ID: 374996
• Report Number(s): CONF-9304297--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 2 Vol. 40; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BROMINE 69
GEV RANGE 01-10
HEAVY ION REACTIONS
KRYPTON 78
NICKEL 58 TARGET
PARTICLE PRODUCTION
STABILITY