Independent isomeric yield ratios of fission products in the epi-cadmium neutron induced fission of 235U

H Naik; R J Singh; S P Dange; W Jang

doi:10.1016/j.apradiso.2024.111536

Independent isomeric yield ratios of fission products in the epi-cadmium neutron induced fission of ²³⁵U

Appl Radiat Isot. 2024 Dec:214:111536. doi: 10.1016/j.apradiso.2024.111536. Epub 2024 Oct 1.

Authors

H Naik¹, R J Singh², S P Dange³, W Jang⁴

Affiliations

¹ Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India. Electronic address: naikhbarc@yahoo.com.
² Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India. Electronic address: drrjsingh@gmail.com.
³ Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai, 400 085, India. Electronic address: dangesp@barc.gov.in.
⁴ Department of Physics, Kyungpook National University, Daegu, 41566, South Korea. Electronic address: wyjang.physics@gmail.com.

PMID: 39366217
DOI: 10.1016/j.apradiso.2024.111536

Abstract

In the epi-cadmium neutron induced fission of ²³⁵U, independent isomeric yield ratios (IR) of fission products ^130,132Sb, ^131,133Te, ^134,136I, ¹³⁵Xe and ¹³⁸Cs have been measured by using an off-line gamma-ray spectrometric technique. The average neutron energy of the epi-cadmium reactor neutron spectrum is 1.9 MeV. From the IR values, the root mean square fragment angular momenta (J_RMS) were deduced by using spin dependent statistical model analysis. The IR and J_RMS values of considered fission products in the epi-cadmium neutron induced fission of ²³⁵U were compared with the literature data in the thermal neutron induced fission of ²³⁵U to examine the influence of excitation energy on nuclear structure effect.

Keywords: (235)U(n; =1.9 MeV; Effect of nuclear structure and excitation energy; F) reaction; Fragment angular momentum; Independent isomeric yield ratio; Off-line γ-ray spectrometry.