Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb

E. V. Karpechev; I. A. Pshenichnov; T. L. Karavicheva; A. B. Kurepin; M. B. Golubeva; F. F. Guber; A. I. Maevskaya; A. I. Reshetin; V. V. Tiflov; N. S. Topilskaya; P. Cortese; G. Dellacasa; R. Arnaldi; N. De Marco; A. Ferretti; M. Gallio; A. Musso; C. Oppedisano; A. Piccotti; E. Scomparin; E. Vercellin; C. Cicalò; G. Puddu; E. Siddi; P. Szymanski; I. Efthymiopoulos

doi:10.1016/j.nuclphysa.2013.11.003

Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb

E. V. Karpechev, I. A. Pshenichnov, T. L. Karavicheva, A. B. Kurepin, M. B. Golubeva, F. F. Guber, A. I. Maevskaya, A. I. Reshetin, V. V. Tiflov, N. S. Topilskaya, P. Cortese, G. Dellacasa, R. Arnaldi, N. De Marco, A. Ferretti, M. Gallio, A. Musso, C. Oppedisano, A. Piccotti, E. ScomparinE. Vercellin, C. Cicalò, G. Puddu, E. Siddi, P. Szymanski, I. Efthymiopoulos

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

The cross sections of forward emission of one, two and three neutrons by 158A GeV ¹¹⁵In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of ¹¹⁵In in ultraperipheral collisions, as well as with the results of the abrasion-ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, in contrast to similar measurements performed earlier with 30A GeV ²⁰⁸Pb colliding with Al.

Lingua originale	Inglese
pagine (da-a)	60-84
Numero di pagine	25
Rivista	Nuclear Physics A
Volume	921
DOI	https://doi.org/10.1016/j.nuclphysa.2013.11.003
Stato di pubblicazione	Pubblicato - gen 2014
Pubblicato esternamente	Sì

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10.1016/j.nuclphysa.2013.11.003

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Karpechev, E. V., Pshenichnov, I. A., Karavicheva, T. L., Kurepin, A. B., Golubeva, M. B., Guber, F. F., Maevskaya, A. I., Reshetin, A. I., Tiflov, V. V., Topilskaya, N. S., Cortese, P., Dellacasa, G., Arnaldi, R., De Marco, N., Ferretti, A., Gallio, M., Musso, A., Oppedisano, C., Piccotti, A., ... Efthymiopoulos, I. (2014). Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb. Nuclear Physics A, 921, 60-84. https://doi.org/10.1016/j.nuclphysa.2013.11.003

@article{cf688efdcf754f7ea57a27a2a9b152dc,

title = "Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb",

abstract = "The cross sections of forward emission of one, two and three neutrons by 158A GeV 115In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of 115In in ultraperipheral collisions, as well as with the results of the abrasion-ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, in contrast to similar measurements performed earlier with 30A GeV 208Pb colliding with Al.",

keywords = "Electromagnetic dissociation of nuclei, Ultraperipheral nucleus-nucleus collisions, Zero degree calorimeters",

author = "Karpechev, {E. V.} and Pshenichnov, {I. A.} and Karavicheva, {T. L.} and Kurepin, {A. B.} and Golubeva, {M. B.} and Guber, {F. F.} and Maevskaya, {A. I.} and Reshetin, {A. I.} and Tiflov, {V. V.} and Topilskaya, {N. S.} and P. Cortese and G. Dellacasa and R. Arnaldi and {De Marco}, N. and A. Ferretti and M. Gallio and A. Musso and C. Oppedisano and A. Piccotti and E. Scomparin and E. Vercellin and C. Cical{\`o} and G. Puddu and E. Siddi and P. Szymanski and I. Efthymiopoulos",

note = "Funding Information: This work was supported by the Russian Foundation for Basic Research , grant No. 12-02-91508-CERN and by the Program of the Russian Academy of Sciences RAS-CERN . The authors are very grateful to V.V. Varlamov for discussions of photonuclear data on 115 In.",

year = "2014",

month = jan,

doi = "10.1016/j.nuclphysa.2013.11.003",

language = "English",

volume = "921",

pages = "60--84",

journal = "Nuclear Physics A",

issn = "0375-9474",

publisher = "Elsevier",

}

Karpechev, EV, Pshenichnov, IA, Karavicheva, TL, Kurepin, AB, Golubeva, MB, Guber, FF, Maevskaya, AI, Reshetin, AI, Tiflov, VV, Topilskaya, NS, Cortese, P, Dellacasa, G, Arnaldi, R, De Marco, N, Ferretti, A, Gallio, M, Musso, A, Oppedisano, C, Piccotti, A, Scomparin, E, Vercellin, E, Cicalò, C, Puddu, G, Siddi, E, Szymanski, P & Efthymiopoulos, I 2014, 'Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb', Nuclear Physics A, vol. 921, pagg. 60-84. https://doi.org/10.1016/j.nuclphysa.2013.11.003

TY - JOUR

T1 - Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb

AU - Karpechev, E. V.

AU - Pshenichnov, I. A.

AU - Karavicheva, T. L.

AU - Kurepin, A. B.

AU - Golubeva, M. B.

AU - Guber, F. F.

AU - Maevskaya, A. I.

AU - Reshetin, A. I.

AU - Tiflov, V. V.

AU - Topilskaya, N. S.

AU - Cortese, P.

AU - Dellacasa, G.

AU - Arnaldi, R.

AU - De Marco, N.

AU - Ferretti, A.

AU - Gallio, M.

AU - Musso, A.

AU - Oppedisano, C.

AU - Piccotti, A.

AU - Scomparin, E.

AU - Vercellin, E.

AU - Cicalò, C.

AU - Puddu, G.

AU - Siddi, E.

AU - Szymanski, P.

AU - Efthymiopoulos, I.

N1 - Funding Information: This work was supported by the Russian Foundation for Basic Research , grant No. 12-02-91508-CERN and by the Program of the Russian Academy of Sciences RAS-CERN . The authors are very grateful to V.V. Varlamov for discussions of photonuclear data on 115 In.

PY - 2014/1

Y1 - 2014/1

N2 - The cross sections of forward emission of one, two and three neutrons by 158A GeV 115In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of 115In in ultraperipheral collisions, as well as with the results of the abrasion-ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, in contrast to similar measurements performed earlier with 30A GeV 208Pb colliding with Al.

AB - The cross sections of forward emission of one, two and three neutrons by 158A GeV 115In nuclei in collisions with Al, Cu, Sn and Pb targets are reported. The measurements were performed in the framework of the ALICE-LUMI experiment at the SPS facility at CERN. Various corrections accounting for the absorption of beam nuclei and produced neutrons in target material and surrounding air were introduced. The corrected cross section data are compared with the predictions of the RELDIS model for electromagnetic fragmentation of 115In in ultraperipheral collisions, as well as with the results of the abrasion-ablation model for neutron emission in hadronic interactions. The measured neutron emission cross sections well agree with the RELDIS results, with the exception of In-Al collisions where the measured cross sections are larger compared to RELDIS. This is attributed to a relatively large contribution of hadronic fragmentation of In on Al target with respect to electromagnetic fragmentation, in contrast to similar measurements performed earlier with 30A GeV 208Pb colliding with Al.

KW - Electromagnetic dissociation of nuclei

KW - Ultraperipheral nucleus-nucleus collisions

KW - Zero degree calorimeters

UR - http://www.scopus.com/inward/record.url?scp=84888397295&partnerID=8YFLogxK

U2 - 10.1016/j.nuclphysa.2013.11.003

DO - 10.1016/j.nuclphysa.2013.11.003

M3 - Article

SN - 0375-9474

VL - 921

SP - 60

EP - 84

JO - Nuclear Physics A

JF - Nuclear Physics A

ER -

Emission of forward neutrons by 158A GeV indium nuclei in collisions with Al, Cu, Sn and Pb

Abstract

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