EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES

A SCHUBERT; R HOLZMANN; S HLAVAC; R KULESSA; W NIEBUR; RS SIMON; P LAUTRIDOU; F LEFEVRE; M MARQUES; T MATULEWICZ; W MITTIG; RW OSTENDORF; P ROUSSELCHOMAZ; Y SCHUTZ; H LOHNER; JHG VANPOL; RH SIEMSSEN; HW WILSCHUT; F BALLESTER; J DIAZ; A MARIN; G MARTINEZ; [No Value] METAG; R NOVOTNY; [No Value] WAGNER; J QUEBERT

EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES

A SCHUBERT^*, R HOLZMANN, S HLAVAC, R KULESSA, W NIEBUR, RS SIMON, P LAUTRIDOU, F LEFEVRE, M MARQUES, T MATULEWICZ, W MITTIG, RW OSTENDORF, P ROUSSELCHOMAZ, Y SCHUTZ, H LOHNER, JHG VANPOL, RH SIEMSSEN, HW WILSCHUT, F BALLESTER, J DIAZA MARIN, G MARTINEZ, [No Value] METAG, R NOVOTNY, [No Value] WAGNER, J QUEBERT

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

25 Citations (Scopus)

Abstract

We present data on hard-photon production in Ar-36 + Au-197 and Ar-36 + C-12 collisions at 95 MeV/nucleon. The photon source velocity beta(S) is investigated as a function of system size, photon energy, and impact parameter. In the heavy system, beta(S) is found to be sizably smaller than beta(beam)/2, except for very peripheral reactions. This unambiguously demonstrates that at intermediate bombarding energies photon emission is not solely dominated by first-chance p-n collisions, but carries also information on the later, stopping phase of the reaction.

Original language	English
Pages (from-to)	1608-1611
Number of pages	4
Journal	Physical Review Letters
Volume	72
Issue number	11
Publication status	Published - 14-Mar-1994

Keywords

GAMMA-RAY PRODUCTION
IMPACT PARAMETER
ENERGY
DEPENDENCE
SPECTROMETER

Handle.net

Persistent link

Cite this

SCHUBERT, A., HOLZMANN, R., HLAVAC, S., KULESSA, R., NIEBUR, W., SIMON, RS., LAUTRIDOU, P., LEFEVRE, F., MARQUES, M., MATULEWICZ, T., MITTIG, W., OSTENDORF, RW., ROUSSELCHOMAZ, P., SCHUTZ, Y., LOHNER, H., VANPOL, JHG., SIEMSSEN, RH., WILSCHUT, HW., BALLESTER, F., ... QUEBERT, J. (1994). EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES. Physical Review Letters, 72(11), 1608-1611.

@article{344a8236b0f54668b94fad614a7dd28d,

title = "EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES",

abstract = "We present data on hard-photon production in Ar-36 + Au-197 and Ar-36 + C-12 collisions at 95 MeV/nucleon. The photon source velocity beta(S) is investigated as a function of system size, photon energy, and impact parameter. In the heavy system, beta(S) is found to be sizably smaller than beta(beam)/2, except for very peripheral reactions. This unambiguously demonstrates that at intermediate bombarding energies photon emission is not solely dominated by first-chance p-n collisions, but carries also information on the later, stopping phase of the reaction.",

keywords = "GAMMA-RAY PRODUCTION, IMPACT PARAMETER, ENERGY, DEPENDENCE, SPECTROMETER",

author = "A SCHUBERT and R HOLZMANN and S HLAVAC and R KULESSA and W NIEBUR and RS SIMON and P LAUTRIDOU and F LEFEVRE and M MARQUES and T MATULEWICZ and W MITTIG and RW OSTENDORF and P ROUSSELCHOMAZ and Y SCHUTZ and H LOHNER and JHG VANPOL and RH SIEMSSEN and HW WILSCHUT and F BALLESTER and J DIAZ and A MARIN and G MARTINEZ and METAG, {[No Value]} and R NOVOTNY and WAGNER, {[No Value]} and J QUEBERT",

year = "1994",

month = mar,

day = "14",

language = "English",

volume = "72",

pages = "1608--1611",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "AMER PHYSICAL SOC",

number = "11",

}

SCHUBERT, A, HOLZMANN, R, HLAVAC, S, KULESSA, R, NIEBUR, W, SIMON, RS, LAUTRIDOU, P, LEFEVRE, F, MARQUES, M, MATULEWICZ, T, MITTIG, W, OSTENDORF, RW, ROUSSELCHOMAZ, P, SCHUTZ, Y, LOHNER, H, VANPOL, JHG, SIEMSSEN, RH, WILSCHUT, HW, BALLESTER, F, DIAZ, J, MARIN, A, MARTINEZ, G, METAG, NV, NOVOTNY, R, WAGNER, NV & QUEBERT, J 1994, 'EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES', Physical Review Letters, vol. 72, no. 11, pp. 1608-1611.

TY - JOUR

T1 - EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES

AU - SCHUBERT, A

AU - HOLZMANN, R

AU - HLAVAC, S

AU - KULESSA, R

AU - NIEBUR, W

AU - SIMON, RS

AU - LAUTRIDOU, P

AU - LEFEVRE, F

AU - MARQUES, M

AU - MATULEWICZ, T

AU - MITTIG, W

AU - OSTENDORF, RW

AU - ROUSSELCHOMAZ, P

AU - SCHUTZ, Y

AU - LOHNER, H

AU - VANPOL, JHG

AU - SIEMSSEN, RH

AU - WILSCHUT, HW

AU - BALLESTER, F

AU - DIAZ, J

AU - MARIN, A

AU - MARTINEZ, G

AU - METAG, [No Value]

AU - NOVOTNY, R

AU - WAGNER, [No Value]

AU - QUEBERT, J

PY - 1994/3/14

Y1 - 1994/3/14

N2 - We present data on hard-photon production in Ar-36 + Au-197 and Ar-36 + C-12 collisions at 95 MeV/nucleon. The photon source velocity beta(S) is investigated as a function of system size, photon energy, and impact parameter. In the heavy system, beta(S) is found to be sizably smaller than beta(beam)/2, except for very peripheral reactions. This unambiguously demonstrates that at intermediate bombarding energies photon emission is not solely dominated by first-chance p-n collisions, but carries also information on the later, stopping phase of the reaction.

AB - We present data on hard-photon production in Ar-36 + Au-197 and Ar-36 + C-12 collisions at 95 MeV/nucleon. The photon source velocity beta(S) is investigated as a function of system size, photon energy, and impact parameter. In the heavy system, beta(S) is found to be sizably smaller than beta(beam)/2, except for very peripheral reactions. This unambiguously demonstrates that at intermediate bombarding energies photon emission is not solely dominated by first-chance p-n collisions, but carries also information on the later, stopping phase of the reaction.

KW - GAMMA-RAY PRODUCTION

KW - IMPACT PARAMETER

KW - ENERGY

KW - DEPENDENCE

KW - SPECTROMETER

M3 - Article

SN - 0031-9007

VL - 72

SP - 1608

EP - 1611

JO - Physical Review Letters

JF - Physical Review Letters

IS - 11

ER -

EVIDENCE FOR STOPPING IN HEAVY-ION COLLISIONS FROM A STUDY OF HARD-PHOTON SOURCE VELOCITIES

Abstract

Keywords

Handle.net

Fingerprint

Cite this