Neutral pion production in the reactions 16O+27Al, 58Ni, 208Pb at E lab=95 MeV/nucleon
Identifieur interne : 000090 ( France/Analysis ); précédent : 000089; suivant : 000091Neutral pion production in the reactions 16O+27Al, 58Ni, 208Pb at E lab=95 MeV/nucleon
Auteurs : C. Moisan [Canada] ; N. De Takacsy [Canada] ; J. Barrette [Canada] ; S. K. Mark [Canada] ; G. Ingold [États-Unis] ; J. Stachel [États-Unis] ; P. Braun-Munzinger [États-Unis] ; N. Alamanos [France] ; Y. Cassagnou [France] ; J. M. Hisleur [France] ; J. Julien [France] ; R. Lacey [France] ; R. Legrain [France] ; P. Roussel-Chomaz [France] ; V. Bellini [Italie] ; L. Sperduto [Italie]Source :
- Nuclear Physics, Section A [ 0375-9474 ] ; 1992.
English descriptors
- Teeft :
- Absorber, Absorber thresholds, Angular distribution, Angular distributions, Angular resolution, Anisotropy, Beam axis, Central collisions, Conversion efficiency, Converter, Detector, Emission angle, Energy dependence, Energy resolution, Field effects, Fireball, Free path, Free pions, Good agreement, Impact parameter, Inverse slope parameter, Kinetic energy, Lett, Moisan, Neuiral pion production, Neutral pion production, Neutral pions, Nucl, Nucleon, Ofthe, Participant region, Peripheral collisions, Photon, Phys, Pion, Pion production, Projectile, Reabsorption, Solid lines, Source frame, Source temperature, Source velocities, Source velocity, Stachel, Subthreshold, Subthreshold pion production, Target mass, Thermal model, Thermal source, Thermal source model, Total energy.
Abstract
Abstract: The production of neutral pions has been studied in the 16O+27Al, 58Ni, 208Pb reactions at 95 MeV/nucleon. Inclusive pion differential distributions dσ dpt, dσ dTπ, and dσ dΩ have been measured by detecting the two-pion decay γ-rays in a setup of 8 lead glass Cherenkov detector telescopes. The data are discussed in the framework of a moving thermal source model. It is shown that the shape of the pion energy spectra is better described if mean field effects on the primary pion-production cross section and pion reabsorption are included in the calculation.
Url:
DOI: 10.1016/0375-9474(92)90373-R
Affiliations:
- Canada, France, Italie, États-Unis
- Québec, État de New York, Île-de-France
- Gif-sur-Yvette, Montréal
- Université McGill
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Bellini</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Département de Fisica, Universita di Catania, and INFN, Catania</wicri:regionArea><wicri:noRegion>Catania</wicri:noRegion></affiliation></author><author><name sortKey="Sperduto, L" sort="Sperduto, L" uniqKey="Sperduto L" first="L." last="Sperduto">L. Sperduto</name><affiliation wicri:level="1"><country xml:lang="fr">Italie</country><wicri:regionArea>Département de Fisica, Universita di Catania, and INFN, Catania</wicri:regionArea><wicri:noRegion>Catania</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j">Nuclear Physics, Section A</title><title level="j" type="abbrev">NUPHA</title><idno type="ISSN">0375-9474</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1992">1992</date><biblScope unit="volume">537</biblScope><biblScope unit="issue">3–4</biblScope><biblScope unit="page" from="667">667</biblScope><biblScope unit="page" to="691">691</biblScope></imprint><idno type="ISSN">0375-9474</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0375-9474</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="Teeft" xml:lang="en"><term>Absorber</term><term>Absorber thresholds</term><term>Angular distribution</term><term>Angular distributions</term><term>Angular resolution</term><term>Anisotropy</term><term>Beam axis</term><term>Central collisions</term><term>Conversion efficiency</term><term>Converter</term><term>Detector</term><term>Emission angle</term><term>Energy dependence</term><term>Energy resolution</term><term>Field effects</term><term>Fireball</term><term>Free path</term><term>Free pions</term><term>Good agreement</term><term>Impact parameter</term><term>Inverse slope parameter</term><term>Kinetic energy</term><term>Lett</term><term>Moisan</term><term>Neuiral pion production</term><term>Neutral pion production</term><term>Neutral pions</term><term>Nucl</term><term>Nucleon</term><term>Ofthe</term><term>Participant region</term><term>Peripheral collisions</term><term>Photon</term><term>Phys</term><term>Pion</term><term>Pion production</term><term>Projectile</term><term>Reabsorption</term><term>Solid lines</term><term>Source frame</term><term>Source temperature</term><term>Source velocities</term><term>Source velocity</term><term>Stachel</term><term>Subthreshold</term><term>Subthreshold pion production</term><term>Target mass</term><term>Thermal model</term><term>Thermal source</term><term>Thermal source model</term><term>Total energy</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The production of neutral pions has been studied in the 16O+27Al, 58Ni, 208Pb reactions at 95 MeV/nucleon. Inclusive pion differential distributions dσ dpt, dσ dTπ, and dσ dΩ have been measured by detecting the two-pion decay γ-rays in a setup of 8 lead glass Cherenkov detector telescopes. The data are discussed in the framework of a moving thermal source model. It is shown that the shape of the pion energy spectra is better described if mean field effects on the primary pion-production cross section and pion reabsorption are included in the calculation.</div></front></TEI><affiliations><list><country><li>Canada</li><li>France</li><li>Italie</li><li>États-Unis</li></country><region><li>Québec</li><li>État de New York</li><li>Île-de-France</li></region><settlement><li>Gif-sur-Yvette</li><li>Montréal</li></settlement><orgName><li>Université McGill</li></orgName></list><tree><country name="Canada"><region name="Québec"><name sortKey="Moisan, C" sort="Moisan, C" uniqKey="Moisan C" first="C." last="Moisan">C. Moisan</name></region><name sortKey="Barrette, J" sort="Barrette, J" uniqKey="Barrette J" first="J." last="Barrette">J. Barrette</name><name sortKey="De Takacsy, N" sort="De Takacsy, N" uniqKey="De Takacsy N" first="N." last="De Takacsy">N. De Takacsy</name><name sortKey="Mark, S K" sort="Mark, S K" uniqKey="Mark S" first="S. K." last="Mark">S. K. Mark</name></country><country name="États-Unis"><region name="État de New York"><name sortKey="Ingold, G" sort="Ingold, G" uniqKey="Ingold G" first="G." last="Ingold">G. Ingold</name></region><name sortKey="Braun Munzinger, P" sort="Braun Munzinger, P" uniqKey="Braun Munzinger P" first="P." last="Braun-Munzinger">P. Braun-Munzinger</name><name sortKey="Stachel, J" sort="Stachel, J" uniqKey="Stachel J" first="J." last="Stachel">J. Stachel</name></country><country name="France"><region name="Île-de-France"><name sortKey="Alamanos, N" sort="Alamanos, N" uniqKey="Alamanos N" first="N." last="Alamanos">N. Alamanos</name></region><name sortKey="Cassagnou, Y" sort="Cassagnou, Y" uniqKey="Cassagnou Y" first="Y." last="Cassagnou">Y. Cassagnou</name><name sortKey="Hisleur, J M" sort="Hisleur, J M" uniqKey="Hisleur J" first="J. M." last="Hisleur">J. M. Hisleur</name><name sortKey="Julien, J" sort="Julien, J" uniqKey="Julien J" first="J." last="Julien">J. Julien</name><name sortKey="Lacey, R" sort="Lacey, R" uniqKey="Lacey R" first="R." last="Lacey">R. Lacey</name><name sortKey="Legrain, R" sort="Legrain, R" uniqKey="Legrain R" first="R." last="Legrain">R. Legrain</name><name sortKey="Roussel Chomaz, P" sort="Roussel Chomaz, P" uniqKey="Roussel Chomaz P" first="P." last="Roussel-Chomaz">P. Roussel-Chomaz</name></country><country name="Italie"><noRegion><name sortKey="Bellini, V" sort="Bellini, V" uniqKey="Bellini V" first="V." last="Bellini">V. Bellini</name></noRegion><name sortKey="Sperduto, L" sort="Sperduto, L" uniqKey="Sperduto L" first="L." last="Sperduto">L. 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