Excitation and decay of the first excited state of {sup 17}Ne

Journal Article · Tue Apr 01 00:00:00 EST 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.55.1676· OSTI ID:541973

Chromik, M J; Brown, B A; Fauerbach, M; Glasmacher, T; Ibbotson, R; Scheit, H; Thoennessen, M ^[1]; Thirolf, P G ^[2]

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1. National Superconducting Cyclotron Laboratory and Department of Physics Astronomy, Michigan State University, East Lansing, Michigan 48824 (United States)
2. Ludwig-Maximilian Universitaet Muenchen, D-85748 Garching (Germany)

The first excited state of {sup 17}Ne has been populated via relativistic Coulomb excitation with a radioactive beam of {sup 17}Ne on a {sup 197}Au target and the subsequent {gamma}-ray decay has been observed. This (3)/(2){sup {minus}} state is bound with respect to proton emission but unbound to two-proton decay. The measured {gamma}-ray yield accounts for 43{sub {minus}14}{sup +19}{percent} of the predicted yield from an excitation cross section of 28 mb. It is unlikely that the missing cross section can be attributed to two-proton emission because the lifetime of this branch would have to be a factor 1700 smaller than predicted by standard barrier penetration calculations. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 541973
• Journal Information: Physical Review, C, Vol. 55, Issue 4; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
NEON 17
ENERGY-LEVEL TRANSITIONS
GOLD 197 TARGET
HEAVY ION REACTIONS
COULOMB EXCITATION
EXCITED STATES
NUCLEAR DECAY
RADIOACTIVE ION BEAMS
CROSS SECTIONS
GAMMA DECAY