Total and nuclear photoabsorption cross section of 52Cr in the energy range of 8 - 70 MeV

TL;DR

This study measures the total and nuclear photoabsorption cross section of 52Cr from 8 to 70 MeV, revealing deviations from atomic calculations and identifying resonance structures in the GDR region.

Contribution

First measurement of 52Cr photoabsorption cross section in the 8-70 MeV range with high precision, highlighting nuclear resonance features.

Findings

Deviations from atomic cross section calculations above 40 MeV

Identification of three peaks in the GDR region at 18.9, 20.9, and 23.1 MeV

Evidence of a dip-peak structure at 40-48 MeV

Abstract

Total (atomic+nuclear) photoabsorption cross section of $^{52}Cr$ was for the first time measured in the energy range of 8-70 MeV. Experimental data was produced with small statistic and systematic errors. The results deviate from calculations of atomic cross section at photon energies above 40 MeV. Photonuclear cross section in the region of the E1 giant dipole resonance (GDR) clearly exhibits three peaks at 18.9, 20.9 and 23.1 MeV. At higher energies, the measured cross section hints a dip-peak structure at 40-48 MeV.