Droplet formation in expanding nuclear matter: A system-size dependent study

W. Reisdorf; F. Rami; B. De Schauenburg; Y. Leifels; J. P. Alard; A. Andronic; V. Barret; Z. Basrak; N. Bastid; M. L. Benabderrahmane; R. Čaplar; P. Crochet; P. Dupieux; M. Dželalija; Z. Fodor; A. Gobbi; Y. Grishkin; O. N. Hartmann; N. Herrmann; K. D. Hildenbrand; B. Hong; J. Kecskemeti; Y. J. Kim; M. Kirejczyk; P. Koczoń; M. Korolija; R. Kotte; T. Kress; A. Lebedev; X. Lopez; M. Merschmeyer; J. Mösner; W. Neubert; D. Pelte; M. Petrovici; A. Schüttauf; Z. Seres; B. Sikora; K. S. Sim; V. Simion; K. Siwek-Wilczyńska; V. Smolyankin; M. Stockmeier; G. Stoicea; Z. Tymiński; P. Wagner; K. Wiśniewski; D. Wohlfarth; Z. G. Xiao; I. Yushmanov; A. Zhilin

doi:10.1016/j.physletb.2004.05.031

Droplet formation in expanding nuclear matter: A system-size dependent study

W. Reisdorf, F. Rami, B. De Schauenburg, Y. Leifels, J. P. Alard, A. Andronic, V. Barret, Z. Basrak, N. Bastid, M. L. Benabderrahmane, R. Čaplar, P. Crochet, P. Dupieux, M. Dželalija, Z. Fodor, A. Gobbi, Y. Grishkin, O. N. Hartmann, N. Herrmann, K. D. HildenbrandB. Hong, J. Kecskemeti, Y. J. Kim, M. Kirejczyk, P. Koczoń, M. Korolija, R. Kotte, T. Kress, A. Lebedev, X. Lopez, M. Merschmeyer, J. Mösner, W. Neubert, D. Pelte, M. Petrovici, A. Schüttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, M. Stockmeier, G. Stoicea, Z. Tymiński, P. Wagner, K. Wiśniewski, D. Wohlfarth, Z. G. Xiao, I. Yushmanov, A. Zhilin

Physics

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Abstract

Cluster production is investigated in central collisions of Ca+Ca, Ni+Ni, ⁹⁶Zr+⁹⁶Zr, ⁹⁶Ru+⁹⁶Ru, Xe+CsI and Au+Au reactions at 0.4 AGeV incident energy. We find that the multiplicity of clusters with charge Z≥3 grows quadratically with the system's total charge and is associated with a midrapidity source with increasing transverse velocity fluctuations. When reduced to the same number of available charges, an increase of cluster production by about a factor of 5.5 is observed in the midrapidity region between the lightest system (Ca+Ca) and the heaviest one (Au+Au). The results, as well as simulations using quantum molecular dynamics, suggest a collision process where droplets, i.e., nucleon clusters, are created in an expanding, gradually cooling, nucleon gas. Within this picture, expansion dynamics, collective radial flow and cluster formation are closely linked as a result of the combined action of nucleon-nucleon scatterings and the mean fields.

Original language	English (US)
Pages (from-to)	118-126
Number of pages	9
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	595
Issue number	1-4
DOIs	https://doi.org/10.1016/j.physletb.2004.05.031
State	Published - Aug 12 2004

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/j.physletb.2004.05.031

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Reisdorf, W., Rami, F., De Schauenburg, B., Leifels, Y., Alard, J. P., Andronic, A., Barret, V., Basrak, Z., Bastid, N., Benabderrahmane, M. L., Čaplar, R., Crochet, P., Dupieux, P., Dželalija, M., Fodor, Z., Gobbi, A., Grishkin, Y., Hartmann, O. N., Herrmann, N., ... Zhilin, A. (2004). Droplet formation in expanding nuclear matter: A system-size dependent study. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 595(1-4), 118-126. https://doi.org/10.1016/j.physletb.2004.05.031

Reisdorf, W, Rami, F, De Schauenburg, B, Leifels, Y, Alard, JP, Andronic, A, Barret, V, Basrak, Z, Bastid, N, Benabderrahmane, ML, Čaplar, R, Crochet, P, Dupieux, P, Dželalija, M, Fodor, Z, Gobbi, A, Grishkin, Y, Hartmann, ON, Herrmann, N, Hildenbrand, KD, Hong, B, Kecskemeti, J, Kim, YJ, Kirejczyk, M, Koczoń, P, Korolija, M, Kotte, R, Kress, T, Lebedev, A, Lopez, X, Merschmeyer, M, Mösner, J, Neubert, W, Pelte, D, Petrovici, M, Schüttauf, A, Seres, Z, Sikora, B, Sim, KS, Simion, V, Siwek-Wilczyńska, K, Smolyankin, V, Stockmeier, M, Stoicea, G, Tymiński, Z, Wagner, P, Wiśniewski, K, Wohlfarth, D, Xiao, ZG, Yushmanov, I & Zhilin, A 2004, 'Droplet formation in expanding nuclear matter: A system-size dependent study', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 595, no. 1-4, pp. 118-126. https://doi.org/10.1016/j.physletb.2004.05.031

@article{57573384aaf540d6b4d3b9d6543b9201,

title = "Droplet formation in expanding nuclear matter: A system-size dependent study",

abstract = "Cluster production is investigated in central collisions of Ca+Ca, Ni+Ni, 96Zr+96Zr, 96Ru+96Ru, Xe+CsI and Au+Au reactions at 0.4 AGeV incident energy. We find that the multiplicity of clusters with charge Z≥3 grows quadratically with the system's total charge and is associated with a midrapidity source with increasing transverse velocity fluctuations. When reduced to the same number of available charges, an increase of cluster production by about a factor of 5.5 is observed in the midrapidity region between the lightest system (Ca+Ca) and the heaviest one (Au+Au). The results, as well as simulations using quantum molecular dynamics, suggest a collision process where droplets, i.e., nucleon clusters, are created in an expanding, gradually cooling, nucleon gas. Within this picture, expansion dynamics, collective radial flow and cluster formation are closely linked as a result of the combined action of nucleon-nucleon scatterings and the mean fields.",

author = "W. Reisdorf and F. Rami and {De Schauenburg}, B. and Y. Leifels and Alard, {J. P.} and A. Andronic and V. Barret and Z. Basrak and N. Bastid and Benabderrahmane, {M. L.} and R. {\v C}aplar and P. Crochet and P. Dupieux and M. D{\v z}elalija and Z. Fodor and A. Gobbi and Y. Grishkin and Hartmann, {O. N.} and N. Herrmann and Hildenbrand, {K. D.} and B. Hong and J. Kecskemeti and Kim, {Y. J.} and M. Kirejczyk and P. Koczo{\'n} and M. Korolija and R. Kotte and T. Kress and A. Lebedev and X. Lopez and M. Merschmeyer and J. M{\"o}sner and W. Neubert and D. Pelte and M. Petrovici and A. Sch{\"u}ttauf and Z. Seres and B. Sikora and Sim, {K. S.} and V. Simion and K. Siwek-Wilczy{\'n}ska and V. Smolyankin and M. Stockmeier and G. Stoicea and Z. Tymi{\'n}ski and P. Wagner and K. Wi{\'s}niewski and D. Wohlfarth and Xiao, {Z. G.} and I. Yushmanov and A. Zhilin",

note = "Funding Information: This work was supported in part by the French–German agreement between GSI and IN2P3/CEA (project No. 97-27).",

year = "2004",

month = aug,

day = "12",

doi = "10.1016/j.physletb.2004.05.031",

language = "English (US)",

volume = "595",

pages = "118--126",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-4",

}

TY - JOUR

T1 - Droplet formation in expanding nuclear matter

T2 - A system-size dependent study

AU - Reisdorf, W.

AU - Rami, F.

AU - De Schauenburg, B.

AU - Leifels, Y.

AU - Alard, J. P.

AU - Andronic, A.

AU - Barret, V.

AU - Basrak, Z.

AU - Bastid, N.

AU - Benabderrahmane, M. L.

AU - Čaplar, R.

AU - Crochet, P.

AU - Dupieux, P.

AU - Dželalija, M.

AU - Fodor, Z.

AU - Gobbi, A.

AU - Grishkin, Y.

AU - Hartmann, O. N.

AU - Herrmann, N.

AU - Hildenbrand, K. D.

AU - Hong, B.

AU - Kecskemeti, J.

AU - Kim, Y. J.

AU - Kirejczyk, M.

AU - Koczoń, P.

AU - Korolija, M.

AU - Kotte, R.

AU - Kress, T.

AU - Lebedev, A.

AU - Lopez, X.

AU - Merschmeyer, M.

AU - Mösner, J.

AU - Neubert, W.

AU - Pelte, D.

AU - Petrovici, M.

AU - Schüttauf, A.

AU - Seres, Z.

AU - Sikora, B.

AU - Sim, K. S.

AU - Simion, V.

AU - Siwek-Wilczyńska, K.

AU - Smolyankin, V.

AU - Stockmeier, M.

AU - Stoicea, G.

AU - Tymiński, Z.

AU - Wagner, P.

AU - Wiśniewski, K.

AU - Wohlfarth, D.

AU - Xiao, Z. G.

AU - Yushmanov, I.

AU - Zhilin, A.

N1 - Funding Information: This work was supported in part by the French–German agreement between GSI and IN2P3/CEA (project No. 97-27).

PY - 2004/8/12

Y1 - 2004/8/12

N2 - Cluster production is investigated in central collisions of Ca+Ca, Ni+Ni, 96Zr+96Zr, 96Ru+96Ru, Xe+CsI and Au+Au reactions at 0.4 AGeV incident energy. We find that the multiplicity of clusters with charge Z≥3 grows quadratically with the system's total charge and is associated with a midrapidity source with increasing transverse velocity fluctuations. When reduced to the same number of available charges, an increase of cluster production by about a factor of 5.5 is observed in the midrapidity region between the lightest system (Ca+Ca) and the heaviest one (Au+Au). The results, as well as simulations using quantum molecular dynamics, suggest a collision process where droplets, i.e., nucleon clusters, are created in an expanding, gradually cooling, nucleon gas. Within this picture, expansion dynamics, collective radial flow and cluster formation are closely linked as a result of the combined action of nucleon-nucleon scatterings and the mean fields.

AB - Cluster production is investigated in central collisions of Ca+Ca, Ni+Ni, 96Zr+96Zr, 96Ru+96Ru, Xe+CsI and Au+Au reactions at 0.4 AGeV incident energy. We find that the multiplicity of clusters with charge Z≥3 grows quadratically with the system's total charge and is associated with a midrapidity source with increasing transverse velocity fluctuations. When reduced to the same number of available charges, an increase of cluster production by about a factor of 5.5 is observed in the midrapidity region between the lightest system (Ca+Ca) and the heaviest one (Au+Au). The results, as well as simulations using quantum molecular dynamics, suggest a collision process where droplets, i.e., nucleon clusters, are created in an expanding, gradually cooling, nucleon gas. Within this picture, expansion dynamics, collective radial flow and cluster formation are closely linked as a result of the combined action of nucleon-nucleon scatterings and the mean fields.

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UR - http://www.scopus.com/inward/citedby.url?scp=3843077353&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2004.05.031

DO - 10.1016/j.physletb.2004.05.031

M3 - Article

AN - SCOPUS:3843077353

SN - 0370-2693

VL - 595

SP - 118

EP - 126

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-4

ER -

Droplet formation in expanding nuclear matter: A system-size dependent study

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