Flow angle from intermediate mass fragment measurements

F. Rami; P. Crochet; R. Donà; B. De Schauenburg; P. Wagner; J. P. Alard; A. Andronic; Z. Basrak; N. Bastid; I. Belyaev; A. Bendarag; G. Berek; D. Best; R. Čaplar; A. Devismes; P. Dupieux; M. Dželalija; M. Eskef; Z. Fodor; A. Gobbi; Y. Grishkin; N. Herrmann; K. D. Hildenbrand; B. Hong; J. Kecskemeti; M. Kirejczyk; M. Korolija; R. Kotte; A. Lebedev; Y. Leifels; H. Merlitz; S. Mohren; D. Moisa; W. Neubert; D. Pelte; M. Petrovici; C. Pinkenburg; C. Plettner; W. Reisdorf; D. Schüll; Z. Seres; B. Sikora; V. Simion; K. Siwek-Wilczyńska; G. Stoicea; M. Stockmeir; M. Vasiliev; K. Wisniewski; D. Wohlfarth; I. Yushmanov; A. Zhilin

doi:10.1016/S0375-9474(98)00641-1

Flow angle from intermediate mass fragment measurements

F. Rami, P. Crochet, R. Donà, B. De Schauenburg, P. Wagner, J. P. Alard, A. Andronic, Z. Basrak, N. Bastid, I. Belyaev, A. Bendarag, G. Berek, D. Best, R. Čaplar, A. Devismes, P. Dupieux, M. Dželalija, M. Eskef, Z. Fodor, A. GobbiY. Grishkin, N. Herrmann, K. D. Hildenbrand, B. Hong, J. Kecskemeti, M. Kirejczyk, M. Korolija, R. Kotte, A. Lebedev, Y. Leifels, H. Merlitz, S. Mohren, D. Moisa, W. Neubert, D. Pelte, M. Petrovici, C. Pinkenburg, C. Plettner, W. Reisdorf, D. Schüll, Z. Seres, B. Sikora, V. Simion, K. Siwek-Wilczyńska, G. Stoicea, M. Stockmeir, M. Vasiliev, K. Wisniewski, D. Wohlfarth, I. Yushmanov, A. Zhilin

Department of Physics

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25 Citations (Scopus)

Abstract

Directed sideward flow of light charged particles and intermediate mass fragments was measured in different symmetric reactions at bombarding energies from 90 to 800 A MeV. The flow parameter is found to increase with the charge of the detected fragment up to Z = 3-4 and then turns into saturation for heavier fragments. Guided by simple simulations of an anisotropic expanding thermal source, we show that the value at saturation can provide a good estimate of the flow angle, Θ_flow, in the participant region. It is found that Θ_flow depends strongly on the impact parameter. The excitation function of Θ_flow reveals striking deviations from the ideal hydrodynamical scaling. The data exhibit a steep rise of Θ_flow to a maximum at around 250-400 A MeV, followed by a moderate decrease as the bombarding energy increases further.

Original language	English
Pages (from-to)	367-384
Number of pages	18
Journal	Nuclear Physics A
Volume	646
Issue number	3
DOIs	https://doi.org/10.1016/S0375-9474(98)00641-1
Publication status	Published - 1999

Bibliographical note

Funding Information:
This work was supportedin part by the French-Germaang reemenbte tweenG SI and IN2P3/CEA and by the PROCOPE-Programof the DAAD.

Keywords

Au(Au,X), E = 90-800 MeV/nucleon
Cs,I(Xe,X), E = 400 MeV/nucleon
Deduced flow parameter, flow angle, source features
Measured light, intermediate charged fragments rapidity distributions
Nuclear reactions Ru(Ru,X), E = 400 MeV/nucleon

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0375-9474(98)00641-1

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Rami, F., Crochet, P., Donà, R., De Schauenburg, B., Wagner, P., Alard, J. P., Andronic, A., Basrak, Z., Bastid, N., Belyaev, I., Bendarag, A., Berek, G., Best, D., Čaplar, R., Devismes, A., Dupieux, P., Dželalija, M., Eskef, M., Fodor, Z., ... Zhilin, A. (1999). Flow angle from intermediate mass fragment measurements. Nuclear Physics A, 646(3), 367-384. https://doi.org/10.1016/S0375-9474(98)00641-1

Rami, F, Crochet, P, Donà, R, De Schauenburg, B, Wagner, P, Alard, JP, Andronic, A, Basrak, Z, Bastid, N, Belyaev, I, Bendarag, A, Berek, G, Best, D, Čaplar, R, Devismes, A, Dupieux, P, Dželalija, M, Eskef, M, Fodor, Z, Gobbi, A, Grishkin, Y, Herrmann, N, Hildenbrand, KD, Hong, B, Kecskemeti, J, Kirejczyk, M, Korolija, M, Kotte, R, Lebedev, A, Leifels, Y, Merlitz, H, Mohren, S, Moisa, D, Neubert, W, Pelte, D, Petrovici, M, Pinkenburg, C, Plettner, C, Reisdorf, W, Schüll, D, Seres, Z, Sikora, B, Simion, V, Siwek-Wilczyńska, K, Stoicea, G, Stockmeir, M, Vasiliev, M, Wisniewski, K, Wohlfarth, D, Yushmanov, I & Zhilin, A 1999, 'Flow angle from intermediate mass fragment measurements', Nuclear Physics A, vol. 646, no. 3, pp. 367-384. https://doi.org/10.1016/S0375-9474(98)00641-1

@article{0bf8eec67d374f9aa51c35e83c46caf4,

title = "Flow angle from intermediate mass fragment measurements",

abstract = "Directed sideward flow of light charged particles and intermediate mass fragments was measured in different symmetric reactions at bombarding energies from 90 to 800 A MeV. The flow parameter is found to increase with the charge of the detected fragment up to Z = 3-4 and then turns into saturation for heavier fragments. Guided by simple simulations of an anisotropic expanding thermal source, we show that the value at saturation can provide a good estimate of the flow angle, Θflow, in the participant region. It is found that Θflow depends strongly on the impact parameter. The excitation function of Θflow reveals striking deviations from the ideal hydrodynamical scaling. The data exhibit a steep rise of Θflow to a maximum at around 250-400 A MeV, followed by a moderate decrease as the bombarding energy increases further.",

keywords = "Au(Au,X), E = 90-800 MeV/nucleon, Cs,I(Xe,X), E = 400 MeV/nucleon, Deduced flow parameter, flow angle, source features, Measured light, intermediate charged fragments rapidity distributions, Nuclear reactions Ru(Ru,X), E = 400 MeV/nucleon",

author = "F. Rami and P. Crochet and R. Don{\`a} and {De Schauenburg}, B. and P. Wagner and Alard, {J. P.} and A. Andronic and Z. Basrak and N. Bastid and I. Belyaev and A. Bendarag and G. Berek and D. Best and R. {\v C}aplar and A. Devismes and P. Dupieux and M. D{\v z}elalija and M. Eskef and Z. Fodor and A. Gobbi and Y. Grishkin and N. Herrmann and Hildenbrand, {K. D.} and B. Hong and J. Kecskemeti and M. Kirejczyk and M. Korolija and R. Kotte and A. Lebedev and Y. Leifels and H. Merlitz and S. Mohren and D. Moisa and W. Neubert and D. Pelte and M. Petrovici and C. Pinkenburg and C. Plettner and W. Reisdorf and D. Sch{\"u}ll and Z. Seres and B. Sikora and V. Simion and K. Siwek-Wilczy{\'n}ska and G. Stoicea and M. Stockmeir and M. Vasiliev and K. Wisniewski and D. Wohlfarth and I. Yushmanov and A. Zhilin",

note = "Funding Information: This work was supportedin part by the French-Germaang reemenbte tweenG SI and IN2P3/CEA and by the PROCOPE-Programof the DAAD.",

year = "1999",

doi = "10.1016/S0375-9474(98)00641-1",

language = "English",

volume = "646",

pages = "367--384",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier B.V.",

number = "3",

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TY - JOUR

T1 - Flow angle from intermediate mass fragment measurements

AU - Rami, F.

AU - Crochet, P.

AU - Donà, R.

AU - De Schauenburg, B.

AU - Wagner, P.

AU - Alard, J. P.

AU - Andronic, A.

AU - Basrak, Z.

AU - Bastid, N.

AU - Belyaev, I.

AU - Bendarag, A.

AU - Berek, G.

AU - Best, D.

AU - Čaplar, R.

AU - Devismes, A.

AU - Dupieux, P.

AU - Dželalija, M.

AU - Eskef, M.

AU - Fodor, Z.

AU - Gobbi, A.

AU - Grishkin, Y.

AU - Herrmann, N.

AU - Hildenbrand, K. D.

AU - Hong, B.

AU - Kecskemeti, J.

AU - Kirejczyk, M.

AU - Korolija, M.

AU - Kotte, R.

AU - Lebedev, A.

AU - Leifels, Y.

AU - Merlitz, H.

AU - Mohren, S.

AU - Moisa, D.

AU - Neubert, W.

AU - Pelte, D.

AU - Petrovici, M.

AU - Pinkenburg, C.

AU - Plettner, C.

AU - Reisdorf, W.

AU - Schüll, D.

AU - Seres, Z.

AU - Sikora, B.

AU - Simion, V.

AU - Siwek-Wilczyńska, K.

AU - Stoicea, G.

AU - Stockmeir, M.

AU - Vasiliev, M.

AU - Wisniewski, K.

AU - Wohlfarth, D.

AU - Yushmanov, I.

AU - Zhilin, A.

N1 - Funding Information: This work was supportedin part by the French-Germaang reemenbte tweenG SI and IN2P3/CEA and by the PROCOPE-Programof the DAAD.

PY - 1999

Y1 - 1999

N2 - Directed sideward flow of light charged particles and intermediate mass fragments was measured in different symmetric reactions at bombarding energies from 90 to 800 A MeV. The flow parameter is found to increase with the charge of the detected fragment up to Z = 3-4 and then turns into saturation for heavier fragments. Guided by simple simulations of an anisotropic expanding thermal source, we show that the value at saturation can provide a good estimate of the flow angle, Θflow, in the participant region. It is found that Θflow depends strongly on the impact parameter. The excitation function of Θflow reveals striking deviations from the ideal hydrodynamical scaling. The data exhibit a steep rise of Θflow to a maximum at around 250-400 A MeV, followed by a moderate decrease as the bombarding energy increases further.

AB - Directed sideward flow of light charged particles and intermediate mass fragments was measured in different symmetric reactions at bombarding energies from 90 to 800 A MeV. The flow parameter is found to increase with the charge of the detected fragment up to Z = 3-4 and then turns into saturation for heavier fragments. Guided by simple simulations of an anisotropic expanding thermal source, we show that the value at saturation can provide a good estimate of the flow angle, Θflow, in the participant region. It is found that Θflow depends strongly on the impact parameter. The excitation function of Θflow reveals striking deviations from the ideal hydrodynamical scaling. The data exhibit a steep rise of Θflow to a maximum at around 250-400 A MeV, followed by a moderate decrease as the bombarding energy increases further.

KW - Au(Au,X), E = 90-800 MeV/nucleon

KW - Cs,I(Xe,X), E = 400 MeV/nucleon

KW - Deduced flow parameter, flow angle, source features

KW - Measured light, intermediate charged fragments rapidity distributions

KW - Nuclear reactions Ru(Ru,X), E = 400 MeV/nucleon

UR - http://www.scopus.com/inward/record.url?scp=0001202268&partnerID=8YFLogxK

U2 - 10.1016/S0375-9474(98)00641-1

DO - 10.1016/S0375-9474(98)00641-1

M3 - Article

AN - SCOPUS:0001202268

SN - 0375-9474

VL - 646

SP - 367

EP - 384

JO - Nuclear Physics A

JF - Nuclear Physics A

IS - 3

ER -

Flow angle from intermediate mass fragment measurements

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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