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Properties of projectile-fragments in the $^{40}$Ar + $^{27}$Al reaction at 44 A MeV. Comparison with a multisequential decay model

Abstract : Results on projectile fragment–fragment coincidences in the forward direction and for the reaction 40Ar + 27Al at 44 A MeV are presented and compared with the predictions of two different entrance channel models, a two-body and a three-body mechanism both followed by a binary multisequential decay including fission. This analysis shows that many features of the projectile decay products are well accounted for by the binary multisequential decay model. However the results depend critically upon the initial masses and excitation energies of the primary projectile fragments. In this respect, the three-body approach underestimates the excitation energy imparted to the primary fragments whereas the two-body scenario overestimates it. The present data put strong constraints on the initial excitation energy imparted to the primary fragments which appears to be intermediate between the predictions of the two models.
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http://hal.in2p3.fr/in2p3-00089293
Contributor : Yvette Heyd <>
Submitted on : Thursday, January 4, 2007 - 9:20:31 PM
Last modification on : Friday, May 8, 2020 - 1:10:44 AM
Long-term archiving on: : Tuesday, April 6, 2010 - 12:35:36 AM

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M. Geraci, G. Lanzanò, E. de Filippo, A. Pagano, J.L. Charvet, et al.. Properties of projectile-fragments in the $^{40}$Ar + $^{27}$Al reaction at 44 A MeV. Comparison with a multisequential decay model. Nuclear Physics A, Elsevier, 2006, 773, pp.1-23. ⟨10.1016/j.nuclphysa.2006.04.004⟩. ⟨in2p3-00089293⟩

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