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Spallation reaction; neutron emission; spallation products; quantum molecular dynamics

The spallation yield of neutrons and other mass fragments produced in 800 MeV proton induced reaction on²⁰⁸Pb have been calculated in the framework of quantum molecular dynamics (QMD) model. The energy spectra and angular distribution have been calculated. Also, multiplicity distributions of the emitted neutrons and kinetic energy carried away by them have been estimated and compared with the available experimental data. The agreement is satisfactory. A major contribution to the neutron emission comes from statistical decay of the fragments. For mass and charge distributions of spallation products the QMD process gives rise to target-like and projectile-like fragments only.

P K Sarkar¹ Maitreyee Nandy²

1. H.P. Unit, Variable Energy Cyclotron Centre, 1/AF, Bidhan Nagar, Kolkata - 700 064, India
2. Saha Institute of Nuclear Physics, 1/AF, Bidhan Nagar, Kolkata - 700 064, India

Published

October 2003

Manuscript received

21 October 2002

Manuscript revised

24 April 2003

Accepted

21 May 2003