Published September 23, 2011 | Version v1
Journal article Metadata-only

Ground-state proton decay of 69Br and implications for the rp-process 68Se waiting-point

Creators

  • 1. Physics Division, Argonne National Laboratory, Argonne, IL, 60439 (United States)
  • 2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 (United States)
  • 3. Istituto Nazionale di Fisica Nucleare, Sezione di Catania, I-95123 (Italy)
  • 4. Department of Chemistry, Washington University, St. Louis, MO 63130 (United States)
  • 5. Indiana University Cyclotron Facility and Department of Chemistry, Bloomington, IN 47405 (United States)
  • 6. FLNR/JINR, 141980 Dubna, Moscow region (Russian Federation)
  • 7. Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

Description

The first direct measurement of the proton separation energy, Sp, for the proton-unbound nucleus 69Br is reported. Of interest is the exponential dependence of the 2p-capture rate on Sp which can bypass the 68Se waiting-point in the astrophysical rp process. An analysis of the observed proton decay spectrum is given in terms of the 69Se mirror nucleus and the influence of Sp is explored within the context of a single-zone X-ray burst model.

Availability note (English)

Available from http://dx.doi.org/10.1088/1742-6596/312/4/042020

Additional details

Identifiers

DOI
10.1088/1742-6596/312/4/042020;

Publishing Information

Journal Title
Journal of Physics. Conference Series (Online)
Journal Volume
312
Journal Issue
4
Journal Page Range
[6 p.]
ISSN
1742-6596

Conference

Title
International nuclear physics conference 2010
Acronym
INPC2010
Dates
4-9 Jul 2010
Place
Vancouver, BC (Canada)

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
43076490
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
Resource subtype / Literary indicator
Conference
Descriptors DEI
ASTROPHYSICS; BINDING ENERGY; BROMINE 69; CAPTURE; GROUND STATES; MIRROR NUCLEI; PROTON SPECTRA; PROTON-EMISSION DECAY; PROTONS; SELENIUM 68; SELENIUM 69; X RADIATION
Descriptors DEC
BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BROMINE ISOTOPES; DECAY; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY; ENERGY LEVELS; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; FERMIONS; HADRONS; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOTOPES; MINUTES LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEI; NUCLEONS; ODD-EVEN NUCLEI; PHYSICS; RADIATIONS; RADIOISOTOPES; SECONDS LIVING RADIOISOTOPES; SELENIUM ISOTOPES; SPECTRA