Estimation of photoneutron yield from beryllium target irradiated by variable energy microtron-based bremsstrahlung radiation

Eshwarappa, K.M.; Ganesh,; Siddappa, K.; Kashyap, Yogesh; Sinha, Alok; Sarkar, Partha Sarathi; Godwal, B. K.

doi:10.1016/j.nima.2004.12.001

Cited by 26 publications

(8 citation statements)

References 16 publications

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“…12 The method followed for target thickness estimation, angular distribution, and bremsstrahlung yield of various energy estimation was discussed elsewhere. 13 A 238 U target was placed in the centre of a cylindrical vacuum chamber, making an angle of 45 • with the incident beam direction. The target was made by depositing 200 µg/cm 2 -thick 238 U on an aluminum backing.…”

Section: Methodsmentioning

confidence: 99%

MEASUREMENT OF PHOTOFISSION CROSS-SECTION OF²³⁸UUSING MICROTRON FACILITY

Prakash

Sanjeev

Kumar

et al. 2011

Int. J. Mod. Phys. E

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Photofission cross-section of 238 U was measured using bremsstrahlung radiation energy 7.4-9.0 MeV with energy step of 0.4 MeV by employing Lexan polycarbonate film as solid state nuclear track detector (SSNTD). The photon intensity from the Microtron accelerator at a distance of 15 cm from the bremsstrahlung converter (tantalum target) facility was estimated to be 10 10 photons/sec using the code EGS-4. In this paper, details of the fission fragment angular distribution measurements of 238 U target using Lexan polycarbonate have been discussed. The photofission cross-section was calculated using the angular distribution of fission fragments and the results were compared with those obtained using the code EMPIRE-II and various barrier parameters of the RIPL-1, RIPL-2 libraries and with the new analytical fission barrier formula based on the Hugenholtz-Van Hove theorem. The present experimental measurements were in good agreement with the results obtained from the Empire-II code predictions for potential parameter taken from RIPL-1 and a newly developed analytical fission barrier formula.

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Section: Methodsmentioning

confidence: 99%

MEASUREMENT OF PHOTOFISSION CROSS-SECTION OF²³⁸UUSING MICROTRON FACILITY

Prakash

Sanjeev

Kumar

et al. 2011

Int. J. Mod. Phys. E

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“…The bremsstrahlung yield was simulated using the Monte Carlo radiation transport code EGS-4 (Nelson et al, 1985). The details of the target thickness, bremsstrahlung yield for various energy estimation and other related aspects are given elsewhere (Eshwarappa et al, 2005).…”

Section: Methodsmentioning

confidence: 99%

Measurement of photofission excitation of 237NP

Rajaprakash

Sanjeev

Kumar

et al. 2011

Radiation Measurements

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“…A thick target is defined as a target which its thickness is at least a fraction of the mean range of the incident electrons [13]. W, Pb, Ag, Re, Ta, and Th are a number of high-Z materials which have been suggested as photon convertors in the literature [11,17,[23][24][25]. Rather than investigating the appropriate material through results of Monte Carlo simulations, the efficiency of materials candidate in this work are assessed by studying the corresponding radiative stopping powers.…”

Section: A Preliminary Survey Of the Photoneutron Sourcementioning

confidence: 99%