Determination of the {sup 233}Pa(n,f) reaction cross section from 11.5 to 16.5 MeV neutron energy by the hybrid surrogate ratio approach

Journal Article · Mon Dec 15 04:00:00 EST 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.061602· OSTI ID:21199408

Nayak, B K; Saxena, A; Biswas, D C; Mirgule, E T; John, B V; Santra, S; Vind, R P; Choudhury, R K ^[1]; Ganesan, S ^[2]

---

1. Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai-400085 (India)
2. Reactor Physics Design Division, Bhabha Atomic Research Centre, Mumbai- 400085 (India)

A new hybrid surrogate ratio approach has been employed to determine neutron-induced fission cross sections of {sup 233}Pa in the energy range of 11.5 to 16.5 MeV for the first time. The fission probability of {sup 234}Pa and {sup 236}U compound nuclei produced in {sup 232}Th({sup 6}Li, {alpha}){sup 234}Pa and {sup 232}Th({sup 6}Li, d){sup 236}U transfer reaction channels has been measured at E{sub lab}=38.0 MeV in the excitation energy range of 17.0 to 22.0 MeV within the framework of the absolute surrogate method. The {sup 233}Pa(n,f) cross sections are then deduced from the measured fission decay probability ratios of {sup 234}Pa and {sup 236}U compound nuclei using the surrogate ratio method. The {sup 233}Pa(n,f) cross section data from the present experiment along with the data from the literature, covering the neutron energy range of 1.0 to 16.5 MeV have been compared with the predictions of statistical model code EMPIRE-2.19. While the present data are consistent with the model predictions, there is a discrepancy between the earlier experimental data and EMPIRE-2.19 predictions in the neutron energy range of 7.0 to 10.0 MeV.

• OSTI ID: 21199408
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 6 Vol. 78; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
COMPOUND NUCLEI
CROSS SECTIONS
DECAY
DEUTERIUM
EXCITATION
FISSION
FORECASTING
LITHIUM 6
MEV RANGE 10-100
NEUTRONS
NUCLEAR REACTIONS
PROBABILITY
PROTACTINIUM 233
PROTACTINIUM 234
STATISTICAL MODELS
THORIUM 232 TARGET
TRANSFER REACTIONS
URANIUM 236