Enhanced photoneutron cross sections for zirconium isotopes near threshold: evidence for extra M1 strength?

Details Enhanced photoneutron cross sections for zirconium isotopes near threshold: evidence for extra M1 strength? Enhanced photoneutron cross sections for zirconium isotopes near threshold: evidence for extra M1 strength?

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aipc.1012..173u&link_type=abstract

FRONTIERS IN NUCLEAR STRUCTURE, ASTROPHYSICS, AND REACTIONS: FINUSTAR 2. AIP Conference Proceedings, Volume 1012, pp. 173-178 (

Astronomy and Astrophysics

Astrophysics

Photonuclear Reactions, Single-Particle Levels And Strength Functions, Scattering Of Atoms And Molecules

Scientific paper

Photoneutron cross sections were measured for 91Zr, 92Zr and 94Zr near the neutron separation energy with quasi-monochromatic γ rays. Some systematic extra strength is found around the neutron threshold and identified, through a coherent analysis of 92Zr(γ,n)91Zr and 91Zr(n,γ)92Zr cross sections, as being most probably a strong M1 resonance. The microscopic HFB+QRPA model for the E1 strength with the additional contribution of a strong M1 resonance at 9 MeV is found to explain all the reaction cross section data available. With such an M1 resonance strength tuned on the 92Zr(γ,n)91Zr reaction, the photoneutron cross section of 91Zr and 94Zr are also found to be in good agreement with our new experimental data in the vicinity of the threshold and of the M1 peak energy. The present extra component in the photoneutron channel is qualitatively consistent with the M1 giant resonance reported in the inelastic proton scattering.

Affiliated with

Also associated with

No associations

Rating

Enhanced photoneutron cross sections for zirconium isotopes near threshold: evidence for extra M1 strength? 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 Enhanced photoneutron cross sections for zirconium isotopes near threshold: evidence for extra M1 strength?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Enhanced photoneutron cross sections for zirconium isotopes near threshold: evidence for extra M1 strength? will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1406071