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

doi:10.1103/physrevlett.74.1299

Cited by 31 publications

(14 citation statements)

References 12 publications

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“…In the Fermi energy range (20 < E/A < 100 MeV/ nucleon) of heavy-ion collisions, the reaction cross section is dominated by the contribution of dissipative binary reactions, which involves the formation of well-defined projectile-and target-like fragments [37], showing similarity with what is observed at low bombarding energies (in, e.g., Ref. [38]).…”

Section: Selection Of Noncentral Collisionsmentioning

confidence: 52%

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Centrality dependence of isospin effect signatures inSn124+64Ni and
Płaneta¹,
Amorini²,
Anzalone³
et al. 2008
Phys. Rev. C
22
2
6
0
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Signatures of isospin effects were investigated for neutron-rich ( 124 Sn+ 64 Ni) and neutron-poor ( 112 Sn+ 58 Ni) systems at 35 MeV/nucleon for noncentral collisions. The centrality dependence of these signatures was tested for several impact parameter estimators. Our main observations are (i) the yields of 1 H and 3 He particles in the neutron-poor system are strongly enhanced with respect to the neutron-rich system, and the yields of 3 H, 6 He, and 7,8 Li are suppressed at all impact parameters, (ii) the yields of 2 H, 4 He, and 6 Li particles are almost the same for both systems, (iii) the N/Z ratio of intermediate mass fragments is correlated with the neutron richness of the system and is weakly dependent on the centrality of the collision, and (iv) the neutron richness of the detected fragments increases strongly with decreasing rapidity in the range from that of the projectile-like fragment to the c.m. region. The gross features of experimental data are reproduced by quantum molecular dynamics model calculations. A comparison between model calculations and the data indicates that the fragments produced in the c.m. regions are weakly excited.

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Section: Selection Of Noncentral Collisionsmentioning

confidence: 52%

“…On the other hand, higher energy dissipation (excitation energy) is correlated with smaller kinetic energy of the PLF [37]. Such a correlation is presented for experimental data in the bottom left panel of Fig.…”

Section: Selection Of Noncentral Collisionsmentioning

confidence: 83%

Centrality dependence of isospin effect signatures inSn124+64Ni and
Płaneta¹,
Amorini²,
Anzalone³
et al. 2008
Phys. Rev. C
22
2
6
0
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“…A detailed account of the experimental procedures is given elsewhere [11][12][13][14]. The present paper discusses data on IMFs (Z $ 3), neutrons, and projectilelike fragments (PLF, with 10 # Z PLF # 54), obtained with the Washington University Dwarf array [15], the Rochester University 900 liter RedBall neutron multiplicity meter [12], and several position-sensitive silicon-detector telescopes, respectively.…”

mentioning

confidence: 99%

Dynamical Fragment Production as a Mode of Energy Dissipation in Heavy-Ion Reactions

Tōke¹,

Agnihotri²,

Baldwin³

et al. 1996

Phys. Rev. Lett.

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Based on measured correlations between experimental observables in the 209 Bi 1 136 Xe reaction at E͞A 28 MeV, it is shown that multiple intermediate-mass fragment (IMF) production is a dynamical process driven by the energy of relative motion of projectilelike and targetlike fragments. This kinetic energy is converted into thermal energy of the system, until a certain "saturation" value of approximately 3 MeV͞nucleon is reached. From this point on, this "conventional" dissipation mechanism is replaced by dynamical IMF production, constituting a new mode of energy dissipation. [S0031-9007(96)

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“…In these systems, fusion-like collisions are less frequent. 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].…”

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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Dissipative Orbiting inB209i+X136

Cited by 31 publications

References 12 publications

Centrality dependence of isospin effect signatures inSn124+64Ni and
Płaneta¹,
Amorini²,
Anzalone³
et al. 2008
Phys. Rev. C
22
2
6
0
View full text Add to dashboard Cite

Centrality dependence of isospin effect signatures inSn124+64Ni and
Płaneta¹,
Amorini²,
Anzalone³
et al. 2008
Phys. Rev. C
22
2
6
0
View full text Add to dashboard Cite

Dynamical Fragment Production as a Mode of Energy Dissipation in Heavy-Ion Reactions

Heavy residue formation in 20 MeV/nucleon collisions

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Dissipative Orbiting inB209i+X136

Cited by 31 publications

References 12 publications

Centrality dependence of isospin effect signatures inSn124+64Ni andPłaneta1, Amorini2, Anzalone3 et al. 2008Phys. Rev. C22260View full textAdd to dashboardCite

Centrality dependence of isospin effect signatures inSn124+64Ni andPłaneta1, Amorini2, Anzalone3 et al. 2008Phys. Rev. C22260View full textAdd to dashboardCite

Dynamical Fragment Production as a Mode of Energy Dissipation in Heavy-Ion Reactions

Heavy residue formation in 20 MeV/nucleon collisions

Contact Info

Product

Resources

About

Centrality dependence of isospin effect signatures inSn124+64Ni and
Płaneta¹,
Amorini²,
Anzalone³
et al. 2008
Phys. Rev. C
22
2
6
0
View full text Add to dashboard Cite

Centrality dependence of isospin effect signatures inSn124+64Ni and
Płaneta¹,
Amorini²,
Anzalone³
et al. 2008
Phys. Rev. C
22
2
6
0
View full text Add to dashboard Cite