Measurement of photo-fission yields and photo-neutron cross-sections in 209Bi with 50 and 65 MeV bremsstrahlung

H. Naik; S. Singh; A. V. R. Reddy; V. K. Manchanda; S. Ganesan; D. Raj; Md. Shakilur Rahman; K. S. Kim; M. W. Lee; G. Kim; Y. D. Oh; H. -S. Lee; M. -H. Cho; I. S. Ko; W. Namkung

doi:10.1140/epja/i2009-10812-8

2021 Impact factor 3.131

Hadrons and Nuclei

Eur. Phys. J. A (2009) 41: 323-334
https://doi.org/10.1140/epja/i2009-10812-8

Regular Article - Experimental Physics

Measurement of photo-fission yields and photo-neutron cross-sections in ²⁰⁹Bi with 50 and 65 MeV bremsstrahlung

H. Naik¹, S. Singh¹, A. V. R. Reddy¹, V. K. Manchanda¹, S. Ganesan², D. Raj², Md. Shakilur Rahman³, K. S. Kim³, M. W. Lee³, G. Kim³^*, Y. D. Oh⁴, H. -S. Lee⁴, M. -H. Cho⁴, I. S. Ko⁴ and W. Namkung⁴

¹ Radiochemistry Division, Bhabha Atomic Research Centre, 400085, Trombay, Mumbai, India
² Reactor Physics Design Division, BARC, 400085, Trombay, Mumbai, India
³ Department of Physics, Kyungpook National University, 702-701, Daegu, Republic of Korea
⁴ Pohang Accelerator Laboratory, Pohang University of Science and Technology, 790-784, Pohang, Republic of Korea

^* e-mail: gnkim@knu.ac.kr

Received: 9 January 2009
Revised: 27 April 2009
Accepted: 29 May 2009
Published online: 24 July 2009

Abstract

The photo-fission yields and photo-neutron cross-sections of (, 3n) and (, 4n) on ²⁰⁹Bi induced by 50 and 65MeV bremsstrahlung have been measured by using a recoil catcher and an off-line -ray spectrometric technique. The mass-yield distribution of fission products in ²⁰⁹Bi induced by bremsstrahlung photons from the present work and literature data in the energy range 28-85MeV is symmetric around 103 mass units. However, the full width at half maximum of the yields distribution increases from 19 mass units at 28-40MeV to 23 mass units at 85MeV. The (, 3n) reaction cross-section in the 50MeV and the (, 4n) reaction cross-section in the 50 and 65MeV bremsstrahlung-induced reaction of ²⁰⁹Bi were determined for the first time.