Equilibration of /sup 176/Lu/sup g,m/ during the s-process

Journal Article · Mon Apr 15 00:00:00 EST 1985 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/163119· OSTI ID:5367458

Norman, E B; Bertram, T; Kellogg, S E; Gil, S; Wong, P

The effects of photoexcitation and positron annihilation-excitation of /sup 176/Lu/sup g/ to /sup 176/Lu/sup m/ have been investigated. It is found that as a result of these two processes alone, /sup 176/Lu/sup g/ and /sup 176/Lu/sup m/ are in thermal equilibrium at temperatures > or =3.5 x 10/sup 8/ K. This implies that /sup 176/Lu is not a reliable s-process chronometer.

• Research Organization: Nuclear Physics Laboratory, University of Washington
• OSTI ID: 5367458
• Journal Information: Astrophys. J.; (United States), Vol. 291:2
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
LUTETIUM 176
S PROCESS
ANNIHILATION
ENERGY LEVELS
EXCITATION
GROUND STATES
METASTABLE STATES
NUCLEOSYNTHESIS
POSITRONS
ANTILEPTONS
ANTIMATTER
ANTIPARTICLES
BASIC INTERACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
ELECTROMAGNETIC INTERACTIONS
ELEMENTARY PARTICLES
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
FERMIONS
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOTOPES
LEPTONS
LUTETIUM ISOTOPES
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
STAR EVOLUTION
SYNTHESIS
YEARS LIVING RADIOISOTOPES
651820* - Nuclear Properties & Reactions
A=150-189
Experimental