Fragment excitation energies at freeze-out in 84Kr+93Nb collisions at 45 MeV/nucleon

P. Staszel; Z. Majka; L. G. Sobotka; D. G. Sarantites; R. J. Charity; J. Cibor; K. Hagel; N. Marie; J. B. Natowitz; R. Wada; D. W. Stracener; G. Auger; Y. Schutz; J. P. Wieleczko; R. Dayras; E. Plagnol; J. Barreto; E. Norbeck

doi:10.1103/PhysRevC.63.064610

Fragment excitation energies at freeze-out in ⁸⁴Kr+⁹³Nb collisions at 45 MeV/nucleon

P. Staszel, Z. Majka, L. G. Sobotka, D. G. Sarantites, R. J. Charity, J. Cibor, K. Hagel, N. Marie, J. B. Natowitz, R. Wada, D. W. Stracener, G. Auger, Y. Schutz, J. P. Wieleczko, R. Dayras, E. Plagnol, J. Barreto, E. Norbeck

Medical Isotopes and Development

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Abstract

The emission of light charged particles and intermediate-mass fragments (IMF's) from central collisions of 45 MeV/nucleon ⁸⁴Kr with ⁹³Nb has been studied. Violent collisions have been selected using the total collected charge condition. The analysis of the primary IMF excitation energies has been performed for four bins of the detected IMF charge (2<Z_IMF<20). We find evidence that (a) the mean excitation energy per nucleon for these fragments is independent of fragment charge and approximately equal to 2.5 MeV, (b) the primary fragments at freeze-out preserve the entrance channel (combined system) N/Z ratio, and (c) the freeze-out volume itself is far from spherical.

Original language	English
Article number	064610
Pages (from-to)	646101-6461013
Number of pages	5814913
Journal	Physical Review C - Nuclear Physics
Volume	63
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevC.63.064610
State	Published - Jun 2001

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Staszel, P., Majka, Z., Sobotka, L. G., Sarantites, D. G., Charity, R. J., Cibor, J., Hagel, K., Marie, N., Natowitz, J. B., Wada, R., Stracener, D. W., Auger, G., Schutz, Y., Wieleczko, J. P., Dayras, R., Plagnol, E., Barreto, J., & Norbeck, E. (2001). Fragment excitation energies at freeze-out in ⁸⁴Kr+⁹³Nb collisions at 45 MeV/nucleon. Physical Review C - Nuclear Physics, 63(6), 646101-6461013. Article 064610. https://doi.org/10.1103/PhysRevC.63.064610

@article{d86c59e99d354d9b819f787c160075e1,

title = "Fragment excitation energies at freeze-out in 84Kr+93Nb collisions at 45 MeV/nucleon",

abstract = "The emission of light charged particles and intermediate-mass fragments (IMF's) from central collisions of 45 MeV/nucleon 84Kr with 93Nb has been studied. Violent collisions have been selected using the total collected charge condition. The analysis of the primary IMF excitation energies has been performed for four bins of the detected IMF charge (2IMF<20). We find evidence that (a) the mean excitation energy per nucleon for these fragments is independent of fragment charge and approximately equal to 2.5 MeV, (b) the primary fragments at freeze-out preserve the entrance channel (combined system) N/Z ratio, and (c) the freeze-out volume itself is far from spherical.",

author = "P. Staszel and Z. Majka and Sobotka, {L. G.} and Sarantites, {D. G.} and Charity, {R. J.} and J. Cibor and K. Hagel and N. Marie and Natowitz, {J. B.} and R. Wada and Stracener, {D. W.} and G. Auger and Y. Schutz and Wieleczko, {J. P.} and R. Dayras and E. Plagnol and J. Barreto and E. Norbeck",

year = "2001",

month = jun,

doi = "10.1103/PhysRevC.63.064610",

language = "English",

volume = "63",

pages = "646101--6461013",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

number = "6",

}

Staszel, P, Majka, Z, Sobotka, LG, Sarantites, DG, Charity, RJ, Cibor, J, Hagel, K, Marie, N, Natowitz, JB, Wada, R, Stracener, DW, Auger, G, Schutz, Y, Wieleczko, JP, Dayras, R, Plagnol, E, Barreto, J & Norbeck, E 2001, 'Fragment excitation energies at freeze-out in ⁸⁴Kr+⁹³Nb collisions at 45 MeV/nucleon', Physical Review C - Nuclear Physics, vol. 63, no. 6, 064610, pp. 646101-6461013. https://doi.org/10.1103/PhysRevC.63.064610

TY - JOUR

T1 - Fragment excitation energies at freeze-out in 84Kr+93Nb collisions at 45 MeV/nucleon

AU - Staszel, P.

AU - Majka, Z.

AU - Sobotka, L. G.

AU - Sarantites, D. G.

AU - Charity, R. J.

AU - Cibor, J.

AU - Hagel, K.

AU - Marie, N.

AU - Natowitz, J. B.

AU - Wada, R.

AU - Stracener, D. W.

AU - Auger, G.

AU - Schutz, Y.

AU - Wieleczko, J. P.

AU - Dayras, R.

AU - Plagnol, E.

AU - Barreto, J.

AU - Norbeck, E.

PY - 2001/6

Y1 - 2001/6

N2 - The emission of light charged particles and intermediate-mass fragments (IMF's) from central collisions of 45 MeV/nucleon 84Kr with 93Nb has been studied. Violent collisions have been selected using the total collected charge condition. The analysis of the primary IMF excitation energies has been performed for four bins of the detected IMF charge (2IMF<20). We find evidence that (a) the mean excitation energy per nucleon for these fragments is independent of fragment charge and approximately equal to 2.5 MeV, (b) the primary fragments at freeze-out preserve the entrance channel (combined system) N/Z ratio, and (c) the freeze-out volume itself is far from spherical.

AB - The emission of light charged particles and intermediate-mass fragments (IMF's) from central collisions of 45 MeV/nucleon 84Kr with 93Nb has been studied. Violent collisions have been selected using the total collected charge condition. The analysis of the primary IMF excitation energies has been performed for four bins of the detected IMF charge (2IMF<20). We find evidence that (a) the mean excitation energy per nucleon for these fragments is independent of fragment charge and approximately equal to 2.5 MeV, (b) the primary fragments at freeze-out preserve the entrance channel (combined system) N/Z ratio, and (c) the freeze-out volume itself is far from spherical.

UR - http://www.scopus.com/inward/record.url?scp=14344268555&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.63.064610

DO - 10.1103/PhysRevC.63.064610

M3 - Article

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SN - 0556-2813

VL - 63

SP - 646101

EP - 6461013

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 6

M1 - 064610

ER -

Fragment excitation energies at freeze-out in ⁸⁴Kr+⁹³Nb collisions at 45 MeV/nucleon

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