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- J Ghassoun, B Chkillou, A. Jehouani
- Applied radiation and isotopes : including dataâ€¦
- 2009

The development of suitable neutron sources and neutron beam is critical to the success of Boron Neutron Capture Therapy (BNCT). In this work a compact system designed for BNCT is presented. The system consists of (252)Cf fission neutron source and a moderator/reflector/filter/shield assembly. The moderator/reflector/filter arrangement has been optimized toâ€¦ (More)

- J Ghassoun, D. Mostacci, Valerio Molinari, A. Jehouani
- Applied radiation and isotopes : including dataâ€¦
- 2010

The purpose of this work is to evaluate the dose rate distribution and to determine the boron effect on dose rate distribution for (252)Cf brachytherapy source. This study was carried out using a Monte Carlo simulation. To validate the Monte Carlo computer code, the dosimetric parameters were determined following the updated TG-43 formalism and comparedâ€¦ (More)

- A Khanouchi, Ali Sabir, M Boulkheir, R Ichaoui, J Ghassoun, A. Jehouani
- Applied radiation and isotopes : including dataâ€¦
- 1997

The aim of this study is to evaluate the albedo effect on the neutron transmission probability through slab shields. For this reason we have considered an infinite homogeneous slab having a fixed thickness equal to 20 lambda (lambda is the mean free path of the neutron in the slab). This slab is characterized by the factor Ps (scattering probability) andâ€¦ (More)

- J Ghassoun
- Applied radiation and isotopes : including dataâ€¦
- 2013

The Monte Carlo method was used to determine the effect of tissue inhomogeneities on dose distribution from a Cf-252 brachytherapy source. Neutron and gamma-ray fluences, energy spectra and dose rate distributions were determined in both homogenous and inhomogeneous phantoms. Simulations were performed using the MCNP5 code. Obtained results were comparedâ€¦ (More)

- A Khanouchi, Ali Sabir, M Boulkheir, R Ichaoui, J Ghassoun, A. Jehouani
- Applied radiation and isotopes : including dataâ€¦
- 1997

Frequently, shields used against radiation contain some vacuum channels. We have therefore considered an infinite slab with a fixed thickness (thickness 20 lambda with lambda the mean free path of the neutron in the slab) and an infinite plane source of neutrons which arrived on the left side of the slab; transmitted neutrons through the slab to its rightâ€¦ (More)

- J Ghassoun, N Senhou
- Applied radiation and isotopes : including dataâ€¦
- 2012

In this study, the MCNP5 code was used to model radiotherapy room of a medical linear accelerator operating at 18 MV and to evaluate the neutron and the secondary gamma ray fluences, the energy spectra and the dose equivalent distributions inside a liquid tissue-equivalent (TE) phantom. The obtained results were compared with measured data published in theâ€¦ (More)

- A Khanouchi, Ali Sabir, M Boulkheir, R Ichaoui, J Ghassoun, A. Jehouani
- Applied radiation and isotopes : including dataâ€¦
- 1997

Shields, used for protection against radiation, are often pierced with vacuum channels for passing cables and other instruments for measurements. The neutron transmission through these shields is an unavoidable phenomenon. In this work we study and discuss the effect of channels on neutron transmission through shields. We consider an infinite homogeneousâ€¦ (More)

- J Ghassoun, D. Mostacci
- Applied radiation and isotopes : including dataâ€¦
- 2011

In this work a compact system was designed for bulk sample analysis using the technique of PGNAA. The system consists of (252)Cf fission neutron source, a moderator/reflector/filter assembly, and a suitable enclosure to delimit the resulting neutron beam. The moderator/reflector/filter arrangement has been optimised to maximise the thermal neutron componentâ€¦ (More)

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