Neutrino reactions on {sup 138}La and {sup 180}Ta via charged and neutral currents by the quasiparticle random-phase approximation

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.035504· OSTI ID:21421042

Cheoun, Myung-Ki; Ha, Eunja ^[1]; Hayakawa, T ^[2]; Kajino, Toshitaka ^[3]; Chiba, Satoshi ^[4]

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1. Department of Physics, Soongsil University, Seoul 156-743 (Korea, Republic of)
2. Kansai Photon Science Institute, Japan Atomic Energy Agency, Kizu, Kyoto 619-0215 (Japan)
3. National Astronomical Observatory, Mitaka, Tokyo 181-8589 (Japan)
4. Advanced Science Research Center, Japan Atomic Energy Agency, 2-4 Shirakata-shirane, Tokai, Ibaraki 319-1195 (Japan)

The cosmological origins of the two heaviest odd-odd nuclei {sup 138}La and {sup 180}Ta are believed to be closely related to the neutrino process. We investigate in detail neutrino-induced reactions on the nuclei. Charged current (CC) reactions {sup 138}Ba({nu}{sub e},e{sup -}){sup 138}La and {sup 180}Hf({nu}{sub e},e{sup -}){sup 180}Ta are calculated using the standard quasi-particle random phase approximation (QRPA) with neutron-proton pairing as well as neutron-neutron and proton-proton pairing correlations. For the neutral current (NC) reactions {sup 139}La({nu},{nu}{sup '}){sup 139}La{sup *} and {sup 181}Ta({nu},{nu}{sup '}){sup 181}Ta{sup *}, we generate ground and excited states of the odd-even target nuclei {sup 139}La and {sup 181}Ta by operating one quasiparticle to even-even nuclei {sup 138}Ba and {sup 180}Hf, which are assumed as the BCS ground state. Numerical results for CC reactions are shown to be consistent with recent semiempirical data deduced from the Gamow-Teller strength distributions measured in the ({sup 3}He,t) reaction. Results for NC reactions are estimated to be about 4 to 5 times smaller than the results for CC reactions. Finally, cross sections weighted by the incident neutrino flux in the core-collapse supernova are presented for further applications to the network calculations for relevant nuclear abundances.

• OSTI ID: 21421042
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevC.82.035504; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARIUM 138 TARGET
CHARGED CURRENTS
CORRELATIONS
CROSS SECTIONS
DISTRIBUTION
ELECTRON NEUTRINOS
ELECTRONS
EXCITED STATES
GAMOW-TELLER RULES
GROUND STATES
HAFNIUM 180 TARGET
HELIUM 3
LANTHANUM 138
LANTHANUM 139
LANTHANUM 139 TARGET
NEUTRAL CURRENTS
NEUTRINO REACTIONS
NEUTRON-NEUTRON INTERACTIONS
NEUTRONS
ODD-ODD NUCLEI
PAIRING INTERACTIONS
PROTON-PROTON INTERACTIONS
PROTONS
QUASI PARTICLES
RANDOM PHASE APPROXIMATION
TANTALUM 180
TANTALUM 181
TANTALUM 181 TARGET
ALGEBRAIC CURRENTS
APPROXIMATIONS
BARYON-BARYON INTERACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCULATION METHODS
CURRENTS
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-ODD NUCLEI
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
HEAVY NUCLEI
HELIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LANTHANUM ISOTOPES
LEPTON REACTIONS
LEPTONS
LIGHT NUCLEI
MASSLESS PARTICLES
NEUTRINOS
NUCLEAR REACTIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE INTERACTIONS
PROTON-NUCLEON INTERACTIONS
RADIOISOTOPES
RARE EARTH NUCLEI
STABLE ISOTOPES
TANTALUM ISOTOPES
TARGETS
YEARS LIVING RADIOISOTOPES