Dynamical production of intermediate-mass fragments in peripheral 209Bi+136Xe collisions at

Tōke, J.; Lott, B.; Baldwin, S. P.; Quednau, B.; Schröder, W.; Sobotka, L. G.; Barreto, J.; Charity, R. J.; Gallamore, L.; Sarantites, D. G.; Stracener, D. W.; Souza, R. T. de

doi:10.1016/0375-9474(94)00713-w

Cited by 37 publications

(24 citation statements)

References 5 publications

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“…Previous studies [3,[8][9][10][11][12], [13][14][15][16] of the collisions of heavier nuclei at intermediate energies have shown binary dissipative collisions to be the dominant reaction mechanism. Evidence has been presented [16] for a sequential decay of one of the initial binary fragments leading to a three (or more) body final state along with dynamically emitted IMFs from the collision complex [17]. In some of the binary encounters the projectile-like fragments have been found [12,15] to have very high temperatures (T∼7 MeV).…”

Section: Introductionmentioning

confidence: 99%

Heavy residue formation in 20 MeV/nucleon collisions

Souliotis¹,

Loveland²,

Hanold³

et al. 2002

Nuclear Physics A

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The yields and velocity distributions of heavy residues and fission fragments from the reaction of 20 MeV/nucleon 197 Au + 90 Zr have been measured using the MSU A1200 fragment separator. A bimodal distribution of residues is observed, with one group, resulting from peripheral collisions, having fragment mass numbers A=160-200 while the other group, resulting from "hard"collisions, has A=120-160. This latter group of residues can be distinguished from fission fragments by their lower velocities. A model combining deep-inelastic transfer and incomplete fusion for the primary interaction stage and a statistical evaporation code for the deexcitation stage has been used to describe the properties of the product distributions.

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Section: Introductionmentioning

confidence: 99%

Heavy residue formation in 20 MeV/nucleon collisions

Souliotis¹,

Loveland²,

Hanold³

et al. 2002

Nuclear Physics A

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“…This direction depends strongly on the incident energy, as it will been explained in the next paragraph. Experimental studies have shown that heavy fragments could be emitted by non-evaporative processes, like a neck break-up [26][27][28][29][30][31][32][33][34][35][36][37]. Since the direction of emission of these fragments is mainly aligned on the QP-QT axis, their flow direction is identical to the so-called "evaporated" flow.…”

Section: The Physical Effect For Negative Flow Valuesmentioning

confidence: 99%

Measurements of sideward flow around the balance energy

Cussol¹,

Lefort²,

Péter³

et al. 2002

Phys. Rev. C

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Sideward flow values have been determined with the INDRA multidetector for Ar+Ni, Ni+Ni and Xe+Sn systems studied at GANIL in the 30 to 100 A.MeV incident energy range. The balance energies found for Ar+Ni and Ni+Ni systems are in agreement with previous experimental results and theoretical calculations. Negative sideward flow values have been measured. The possible origins of such negative values are discussed. They could result from a more important contribution of evaporated particles with respect to the contribution of promptly emitted particles at mid-rapidity. But effects induced by the methods used to reconstruct the reaction plane cannot be totally excluded. Complete tests of these methods are presented and the origins of the "auto-correlation" effect have been traced back. For heavy fragments, the observed negative flow values seem to be mainly due to the reaction plane reconstruction methods. For light charged particles, these negative values could result from the dynamics of the collisions and from the reaction plane reconstruction methods as well. These effects have to be taken into account when comparisons with theoretical calculations are done.

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“…Statistical decay models are widely used and dedicated to describe the decay of hot fully equilibrated systems, defined as systems having reached energy, shape and isospin equilibrium [1,2,3,4,5,6,7,8,9]. However other experimental works show strong effects of the entrance channel on the decay modes of the formed hot systems [10,11,12,13,14,15,16,17,18,19,20,21,22,23]. These effects which are not taken into account in the statistical decay models can provide complementary information on the nuclei such as the characteristics of the nucleon-nucleon interaction [24,25,26,27] and/or the viscosity of the nuclear matter.…”

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confidence: 99%

Dynamical effects in multifragmentation at intermediate energies

Colin¹,

Cussol²,

Normand³

et al. 2003

Phys. Rev. C

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The fragmentation of the quasi-projectile is studied with the INDRA multidetector for different colliding systems and incident energies in the Fermi energy range. Different experimental observations show that a large part of the fragmentation is not compatible with the statistical fragmentation of a fully equilibrated nucleus. The study of internal correlations is a powerful tool, especially to evidence entrance channel effects. These effects have to be included in the theoretical descriptions of nuclear multifragmentation.

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Dynamical production of intermediate-mass fragments in peripheral 209Bi+136Xe collisions at

Cited by 37 publications

References 5 publications

Heavy residue formation in 20 MeV/nucleon collisions

Heavy residue formation in 20 MeV/nucleon collisions

Measurements of sideward flow around the balance energy

Dynamical effects in multifragmentation at intermediate energies

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