Post-neutron mass yield distribution and photo-neutron cross-section measurements in Bi-209 with 65-MeV Bremsstrahlung
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- Title
- Post-neutron mass yield distribution and photo-neutron cross-section measurements in Bi-209 with 65-MeV Bremsstrahlung
- Authors
- Naik, H; Reddy, AVR; Ganesan, S; Raj, D; Kim, K; Kim, G; Oh, Y; Pham, DK; Cho, MH; Ko, IS; Namkung, W
- Date Issued
- 2008-03
- Publisher
- KOREAN PHYSICAL SOC
- Abstract
- The post-neutron-emission mass yield distribution and the photo-neutron cross-section (sigma (gamma,3n)) of Bi-209 with 65-MeV bremsstrahlung have been determined using an off-line gamma-ray spectrometric technique in the test electron linac at Pohang Accelerator Laboratory. The post-neutron mass yield distribution in 65-MeV bremsstrahlung induced fission of Bi-209 is symmetric with average mass around 103 and a FWHM of 22 mass units, which is higher than the literature value of 19 mass units in the energy range of 28 - 40 MeV. The increasing trend of the FWHM of the post-neutron mass yield distribution with increasing breamsstrahlung energy has been explained from the point of view of the increase in the multi-chance fission probabilities with increasing excitation energy. The (gamma,3n) reaction cross-section is determined for the first time. It was also calculated using the TALYS code and was found to be in good agreement with the experimental value.
- Keywords
- mass yield distribution; photo-neutron cross-section; Pohang Neutron Facility; 65-MeV bremsstrahlung photon; Bi-209(gamma,f); Bi-209(gamma,3n); recoil catcher technique; off-line gamma-ray spectrometric technique; PARTICLE-INDUCED FISSION; BISMUTH; ENERGETICS; RA226; BI209; U-238; BI
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/108095
- DOI
- 10.3938/jkps.52.934
- ISSN
- 0374-4884
- Article Type
- Article
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, vol. 52, no. 3, page. 934 - 939, 2008-03
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