Статья

Sequential and simultaneous emission of particles from<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>p</mml:mi></mml:math>+ Al collisions at GeV energies

M. FidelusM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandD. FilgesInstitut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, GermanyF. GoldenbaumInstitut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, GermanyH. HoddeInstitut für Strahlen- und Kernphysik, Bonn University, 53121 Bonn, GermanyA. JanyM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandL. JarczykM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandB. KamysM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandM. KistrynH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, 31342 Kraków, PolandSt. KistrynM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandS. KliczewskiH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, 31342 Kraków, PolandE. KozikH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, 31342 Kraków, PolandP. KulessaH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, 31342 Kraków, PolandH. MachnerUniversität Duisburg-Essen, Fakultät für Physik, Lotharstraße 1, 47048 Duisburg, GermanyA. MagieraM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandB. Piskor-IgnatowiczInstitut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, GermanyK. PyszH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, 31342 Kraków, PolandZ. RudyM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, PolandS. SharmaInstitut für Kernphysik, Forschungszentrum Jülich, 52425 Jülich, GermanyR. SiudakH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, 31342 Kraków, PolandM. WojciechowskiM. Smoluchowski Institute of Physics, Jagiellonian University, Reymonta 4, 30059 Kraków, Poland

2014en

ABI

Аннотация

The energy and angular dependence of double differential cross sections ${d}^{2}\ensuremath{\sigma}/d\ensuremath{\Omega}\phantom{\rule{0.16em}{0ex}}dE$ were measured for $p$, $d$, $t$, $^{3,4,6}\mathrm{He}$, $^{6,7,8,9}\mathrm{Li}$, $^{7,9,10}\mathrm{Be}$, and $^{10,11}\mathrm{B}$ produced in collisions of 1.2, 1.9, and 2.5 GeV protons with an Al target. It was found that the cross sections are almost independent of the beam energy. The spectra and angular distributions indicate a presence of two contributions: a quasi-isotropic, low-energy one which is attributed to the emission of particles from excited remnants of the intranuclear cascade, and an anisotropic part which is interpreted to originate from the first stage of the reaction. The experimental data are compared with an intranuclear cascade model coupled to evaporation, and to statistical multifragmentation models using their standard parameter settings. It was found that all applied models produce very similar results describing spectra of the intermediate mass fragments. All models also reproduce well the low-energy part of the spectra of light charged particles (below $\ensuremath{\approx}$ 30 MeV). The description of the higher energy part (50--150 MeV) of the light charged particles spectra is poorer, deteriorating with decreasing scattering angle and decreasing mass of the particles.

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Идентификаторы

DOI: 10.1103/physrevc.89.054617

Цитирования и источники

Цитирований: 2Использованных источников: 0

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