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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2005, Volume 82, Issue 1, Pages 15–17
(Mi jetpl1497)
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This article is cited in 2 scientific papers (total in 2 papers)
FIELDS, PARTICLES, AND NUCLEI
Measurement of the azimuthal anisotropy coefficient v2 for the emission of α particles in nucleus-nucleus collisions at energies 1.88–10.6 GeV/nucleon
V. V. Dubinina, N. P. Egorenkova, V. I. Krotkova, E. A. Pozharova, V. A. Smirnitsky Institute for Theoretical and Experimental Physics (Russian Federation State Scientific Center)
Abstract:
The azimuthal anisotropy of the emission of α particles in collisions of the 22Ne, 24Mg, 56Fe, and 197Au nuclei with photoemulsion nuclei has been measured at projectile energies E pr = 1.88–10.6 GeV/nucleon. The results are compared with similar measurements for protons. It has been found that the ratio of the azimuthal anisotropy coefficients v 2 for α particles and protons is equal to 6 ± 2 at low energies E pr ≈ 2 GeV/nucleon, whereas these coefficients coincide with each other for energies E pr ≥ 4 GeV/nucleon. This difference may indicate that, at low projectile energies, α particles are formed predominantly at the early stage of a collective flow. Formation of α particles for E pr ≥ 4 GeV/nucleon likely occurs at the stage of nuclear matter scattering.
Received: 09.03.2005 Revised: 01.06.2005
Citation:
V. V. Dubinina, N. P. Egorenkova, V. I. Krotkova, E. A. Pozharova, V. A. Smirnitsky, “Measurement of the azimuthal anisotropy coefficient v2 for the emission of α particles in nucleus-nucleus collisions at energies 1.88–10.6 GeV/nucleon”, Pis'ma v Zh. Èksper. Teoret. Fiz., 82:1 (2005), 15–17; JETP Letters, 82:1 (2005), 14–16
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https://www.mathnet.ru/eng/jetpl1497 https://www.mathnet.ru/eng/jetpl/v82/i1/p15
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Abstract page: | 168 | Full-text PDF : | 74 | References: | 24 |
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