Lifetimes of states in {sup 19}Ne above the {sup 15}O+{alpha} breakup threshold

Journal Article · Sat Mar 15 00:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.035803· OSTI ID:21189869

Mythili, S ^[1]; Davids, B; Ball, G C; Chakrawarthy, R S; Churchman, R; Hackman, G; Padilla, E; Pearson, C J; Ruiz, C; Ruprecht, G; Tanihata, I; Vockenhuber, C; Walden, P; Yen, S ^[1]; Alexander, T K ^[2]; Chicoine, M; Forster, J S; Gujrathi, S ^[3]; Howell, D ^[1]; Kanungo, R ^[1]

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1. TRIUMF, 4004 Wesbrook Mall, Vancouver, British Columbia, V6T 2A3 (Canada)
2. Deep River, Ontario (Canada)
3. Departement de Physique, Universite de Montreal, Montreal, Quebec (Canada)

The {sup 15}O({alpha},{gamma}){sup 19}Ne reaction plays a role in the ignition of type I x-ray bursts on accreting neutron stars. The lifetimes of states in {sup 19}Ne above the {sup 15}O+{alpha} threshold of 3.53 MeV are important inputs to calculations of the astrophysical reaction rate. These levels in {sup 19}Ne were populated in the {sup 3}He({sup 20}Ne,{alpha}){sup 19}Ne reaction at a {sup 20}Ne beam energy of 34 MeV. The lifetimes of six states above the threshold were measured with the Doppler-shift attenuation method. The present measurements agree with previous determinations of the lifetimes of these states and in some cases are considerably more precise.

• OSTI ID: 21189869
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 77, Issue 3; Other Information: DOI: 10.1103/PhysRevC.77.035803; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASTROPHYSICS
BEAMS
DOPPLER EFFECT
DSA METHOD
HELIUM 3
IGNITION
LIFETIME
MEV RANGE
NEON 19
NEON 20
NEUTRON STARS
NUCLEAR REACTIONS
OXYGEN 15
REACTION KINETICS
X RADIATION