Maqola

Variation of nonequilibrium processes in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>p</mml:mi><mml:mo>+</mml:mo><mml:mi mathvariant="normal">Ni</mml:mi></mml:mrow></mml:math>system with beam energy

A. BudzanowskiH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandM. FidelusM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandD. FilgesInstitut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, GermanyF. GoldenbaumInstitut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, GermanyH. HoddeInstitut für Strahlen- und Kernphysik, Universität Bonn, D-53121 Bonn, GermanyL. JarczykM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandB. KamysM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandM. KistrynH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandSt. KistrynM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandS. KliczewskiH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandAnna KowalczykM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandE. KozikH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandP. KulessaH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandH. MachnerInstitut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, GermanyA. MagieraM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandB. Piskor-IgnatowiczInstitut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, GermanyK. PyszH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandZ. RudyM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, PolandR. SiudakH. Niewodniczański Institute of Nuclear Physics PAN, Radzikowskiego 152, PL-31342 Kraków, PolandM. WojciechowskiM. Smoluchowski Institute of Physics, Jagellonian University, Reymonta 4, PL-30059 Kraków, Poland

2009lv

ABI

Annotatsiya

The energy and angular dependence of double differential cross sections ${d}^{2}\ensuremath{\sigma}/d\ensuremath{\Omega}\mathit{dE}$ were measured for $p,d,t,$$^{3,4}\mathrm{He}$, $^{6,7}\mathrm{Li}$, $^{7,9}\mathrm{Be}$, and $^{10,11}\mathrm{B}$ produced in collisions of 0.175 GeV protons with a Ni target. The analysis of measured differential cross sections allowed the extraction of total production cross sections for the ejectiles listed above. The shape of the spectra and angular distributions indicates the presence of other nonequilibrium processes besides the emission of nucleons from the intranuclear cascade and the evaporation of various particles from remnants of intranuclear cascade. These nonequilibrium processes consist of the coalescence of nucleons into light-charged particles during the intranuclear cascade, of the fireball emission, which contributes to the cross sections of protons and deuterons, and of the breakup of the target nucleus, which leads to the emission of intermediate mass fragments. All such processes were found earlier at beam energies 1.2, 1.9, and 2.5 GeV for Ni and Au targets; however, significant differences in the properties of these processes at high and low beam energy are observed in the present study.

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DOI: 10.1103/physrevc.80.054604

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