Isovector dipole resonances in 4He and neutrino-heating in supernova

Details Isovector dipole resonances in 4He and neutrino-heating in supernova Isovector dipole resonances in 4He and neutrino-heating in supernova

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1238..280n&link_type=abstract

TOURS SYMPOSIUM ON NUCLEAR PHYSICS AND ASTROPHYSICS-VII. AIP Conference Proceedings, Volume 1238, pp. 280-285 (2010).

Physics

Nuclear Physics

Resonance, Shell Model (Nuclear), Neutral Currents, Neutrino-Nucleus Reactions, Supernovae, Other Resonances, Shell Model, Neutral Currents, Neutrino Scattering, Nuclear Physics Aspects Of Novae, Supernovae, And Other Explosive Environments

Scientific paper

We studied transition strengths to isovector dipole resonances (GDR-1 overbar, SDR-1 overbar, and SDR-2 overbar) in 4He by using the 4He(7Li,7Beγ) reaction at 455 MeV and by comparing with shell-model calculations, in order to estimate cross sections of 4He for reactions induced by neutrinos emitting from a thermalized neutrino-sphere in the type-II supernova. Excitation of the SDR was dominant in the neutrino-heating of 4He. The 4He-excitation via neutral-current reactions of νμ,τ and νμ,τ was found to be one order of magnitude stronger than that via charged-current reactions of νe and νe. The total energy-weighted cross section <ωσ>N for neutrino-induced neutral-current reactions on 4He was found to amount to about 1.0×10-40 MeV.cm2 which is comparable to those used in the previous simulations. The neutrino-heating effect of 4He is small in the type-II supernova explosion.

Affiliated with

Also associated with

No associations

Rating

Isovector dipole resonances in 4He and neutrino-heating in supernova does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Isovector dipole resonances in 4He and neutrino-heating in supernova, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Isovector dipole resonances in 4He and neutrino-heating in supernova will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1345343