Excited states of100Tc from100Mo(p,nγ)100Tc reaction and the parabolic rule

Abstract

7-spectra and excitation functions of the ~~176 nT) l~176 reaction were measured in the 1.2-3.6MeV proton energy range by using thick, enriched targets, Ge(Li) and low energy photon (hyperpure Ge) spectrometers. These detectors were used in YTcoincidence experiments, too. Conversion electron spectrum measurements were performed by means of a superconducting magnet transporter Si(Li) spectrometer (SMS) at Ep =4MeV and multipolarities of some transitions have been determined. Based on the experimental results a level scheme of l~176 has been constructed. Level energies of l~176 were calculated on the basis of the parabolic rule, derived from the cluster-vibration model.Nuclear Reaction: l~176 nT), E= 1.2-4.0 MeV. Measured Ey, Is(E ), 77-coin, Ece, Ice, l~176 deduced levels, multipolarity of transitions, J, ~c. Enriched target. Van de Graaff accelerator, Ge(Li), hyperpure Ge low energy photon spectrometer (LEPS), superconducting magnet transporter Si(Li) spectrometer (SMS).

Prompt Gamma Rays Emitted in Thermal-neutron Capture Reaction by 99Tc and Its Reaction Cross Section

“…There were several studies which aimed at establishing low-lying levels in 100 Tc using 99 Tc(n th ; ), 22,24) 100 Mo(d; 2n), 24) 99 Tc(d; p), 27) 100 Mo(p; n), [28][29][30] and 96 Zr( 7 Li; 3n) 31 29) investigated low-lying levels of 100 Tc with the same reaction in the energy range of 4:0 E p 6:8 MeV by means ofcoincidence technique, and constructed a level scheme up to 521.0 keV. Á rvay et al 30) reported a level scheme up to 906.1 keV energy.…”

“…Our summary is independent of a similar summary appearing in the Nuclear Data Sheets. 32) The 100 Mo(p; n) 100 Tc studies by Á rvay et al 30) and Bini et al 29) are the backbone of the skeleton level scheme.…”

Prompt Gamma Rays Emitted in Thermal-neutron Capture Reaction by99Tc and Its Reaction Cross Section

“…32) The 100 Mo(p; n) 100 Tc studies by Á rvay et al 30) and Bini et al 29) are the backbone of the skeleton level scheme.…”

“…The ICCs of the transitions in 100 Tc have been measured and reported for some lower shells by several authors. 24,30,31) In order to deduce the capture cross section, however, total ICCs were in need, and therefore, these were calculated theoretically using the reported ICCs to the lower shells in the following manner. At first, for each study which reports ICC values, the reported value was compared to the theoretical value based on Ref.…”