π±4-He interactions at 218 MeV/c

N. S. Angelov; S. A. Baginyan; Yu A. Batusov; I. A. Belolaptikov; T. D. Blokhintseva; A. Yu Bonyushkina; V. A. Butenko; A. A. Dem'yanov; V. A. Drozdov; V. N. Frolov; V. M. Grebenyuk; V. V. Ivanov; A. S. Kirilov; V. E. Kovalenko; V. I. Lyashenko; A. S. Moiseenko; V. A. Panyushkin; G. Pontecorvo; V. I. Pryanichnikov; A. M. Rozhdestvensky; N. A. Russakovich; I. Ye Smirnova; F. Balestra; L. Busso; M. P. Bussa; M. Chiosso; M. L. Colantoni; A. Ferrero; L. Ferrero; R. Garfagnini; I. Gnesi; A. Grasso; A. Maggiora; M. Maggiora; G. Piragino; G. F. Zosi; L. Fava; D. Panzieri; A. Bianconi; E. Lodi Rizzini; L. Venturelli; M. G. Schepkin

doi:10.1393/ncb/i2007-10010-y

π^±4-He interactions at 218 MeV/c

N. S. Angelov, S. A. Baginyan, Yu A. Batusov, I. A. Belolaptikov, T. D. Blokhintseva, A. Yu Bonyushkina, V. A. Butenko, A. A. Dem'yanov, V. A. Drozdov, V. N. Frolov, V. M. Grebenyuk, V. V. Ivanov, A. S. Kirilov, V. E. Kovalenko, V. I. Lyashenko, A. S. Moiseenko, V. A. Panyushkin, G. Pontecorvo, V. I. Pryanichnikov, A. M. RozhdestvenskyN. A. Russakovich, I. Ye Smirnova, F. Balestra, L. Busso, M. P. Bussa, M. Chiosso, M. L. Colantoni, A. Ferrero, L. Ferrero, R. Garfagnini, I. Gnesi, A. Grasso, A. Maggiora, M. Maggiora, G. Piragino, G. F. Zosi, L. Fava, D. Panzieri, A. Bianconi, E. Lodi Rizzini, L. Venturelli, M. G. Schepkin

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Abstract

This paper presents the results of a study on pion-helium interaction channels with two charged secondaries at 106 MeV by means of a visualizing technique based on a Self-Shunted Streamer Chamber (SSSC). Following previous studies at several energies, the present work is intended to cover the lack of data for energies below the Δ(1232) threshold in ⁴He, and to reveal new phenomenology far from the Δ activation. Relative branching ratios for different channels are given, as well as new evidence for single charge exchange reaction and for clustering effects between neutron and ³He in the neutron knockout reaction. First evidence for the existence of a single-gamma emission channel is presented. Comparison of the differential cross-sections, deduced from the elastic and single-gamma emission events, with the elastic cross-sections obtained in previous measurements is performed. The energy distributions of the emitted single gammas are also presented; fits with Planck's radiation distribution give good χ² revealing possible nucleus' black-body-like behaviour.The black-body temperature for ⁴He nucleus in the aforementioned conditions is extracted.

Original language	English
Pages (from-to)	771-780
Number of pages	10
Journal	Nuovo Cimento della Societa Italiana di Fisica B
Volume	121
Issue number	8
DOIs	https://doi.org/10.1393/ncb/i2007-10010-y
Publication status	Published - Aug 2006
Externally published	Yes

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Angelov, N. S., Baginyan, S. A., Batusov, Y. A., Belolaptikov, I. A., Blokhintseva, T. D., Bonyushkina, A. Y., Butenko, V. A., Dem'yanov, A. A., Drozdov, V. A., Frolov, V. N., Grebenyuk, V. M., Ivanov, V. V., Kirilov, A. S., Kovalenko, V. E., Lyashenko, V. I., Moiseenko, A. S., Panyushkin, V. A., Pontecorvo, G., Pryanichnikov, V. I., ... Schepkin, M. G. (2006). π^±4-He interactions at 218 MeV/c. Nuovo Cimento della Societa Italiana di Fisica B, 121(8), 771-780. https://doi.org/10.1393/ncb/i2007-10010-y

@article{a9de199c06d1448baf6cf3b8419f710c,

title = "π±4-He interactions at 218 MeV/c",

abstract = "This paper presents the results of a study on pion-helium interaction channels with two charged secondaries at 106 MeV by means of a visualizing technique based on a Self-Shunted Streamer Chamber (SSSC). Following previous studies at several energies, the present work is intended to cover the lack of data for energies below the Δ(1232) threshold in 4He, and to reveal new phenomenology far from the Δ activation. Relative branching ratios for different channels are given, as well as new evidence for single charge exchange reaction and for clustering effects between neutron and 3He in the neutron knockout reaction. First evidence for the existence of a single-gamma emission channel is presented. Comparison of the differential cross-sections, deduced from the elastic and single-gamma emission events, with the elastic cross-sections obtained in previous measurements is performed. The energy distributions of the emitted single gammas are also presented; fits with Planck's radiation distribution give good χ2 revealing possible nucleus' black-body-like behaviour.The black-body temperature for 4He nucleus in the aforementioned conditions is extracted.",

author = "Angelov, {N. S.} and Baginyan, {S. A.} and Batusov, {Yu A.} and Belolaptikov, {I. A.} and Blokhintseva, {T. D.} and Bonyushkina, {A. Yu} and Butenko, {V. A.} and Dem'yanov, {A. A.} and Drozdov, {V. A.} and Frolov, {V. N.} and Grebenyuk, {V. M.} and Ivanov, {V. V.} and Kirilov, {A. S.} and Kovalenko, {V. E.} and Lyashenko, {V. I.} and Moiseenko, {A. S.} and Panyushkin, {V. A.} and G. Pontecorvo and Pryanichnikov, {V. I.} and Rozhdestvensky, {A. M.} and Russakovich, {N. A.} and Smirnova, {I. Ye} and F. Balestra and L. Busso and Bussa, {M. P.} and M. Chiosso and Colantoni, {M. L.} and A. Ferrero and L. Ferrero and R. Garfagnini and I. Gnesi and A. Grasso and A. Maggiora and M. Maggiora and G. Piragino and Zosi, {G. F.} and L. Fava and D. Panzieri and A. Bianconi and Rizzini, {E. Lodi} and L. Venturelli and Schepkin, {M. G.}",

year = "2006",

month = aug,

doi = "10.1393/ncb/i2007-10010-y",

language = "English",

volume = "121",

pages = "771--780",

journal = "Nuovo Cimento della Societa Italiana di Fisica B",

issn = "1594-9982",

number = "8",

}

Angelov, NS, Baginyan, SA, Batusov, YA, Belolaptikov, IA, Blokhintseva, TD, Bonyushkina, AY, Butenko, VA, Dem'yanov, AA, Drozdov, VA, Frolov, VN, Grebenyuk, VM, Ivanov, VV, Kirilov, AS, Kovalenko, VE, Lyashenko, VI, Moiseenko, AS, Panyushkin, VA, Pontecorvo, G, Pryanichnikov, VI, Rozhdestvensky, AM, Russakovich, NA, Smirnova, IY, Balestra, F, Busso, L, Bussa, MP, Chiosso, M, Colantoni, ML, Ferrero, A, Ferrero, L, Garfagnini, R, Gnesi, I, Grasso, A, Maggiora, A, Maggiora, M, Piragino, G, Zosi, GF, Fava, L, Panzieri, D, Bianconi, A, Rizzini, EL, Venturelli, L & Schepkin, MG 2006, 'π^±4-He interactions at 218 MeV/c', Nuovo Cimento della Societa Italiana di Fisica B, vol. 121, no. 8, pp. 771-780. https://doi.org/10.1393/ncb/i2007-10010-y

TY - JOUR

T1 - π±4-He interactions at 218 MeV/c

AU - Angelov, N. S.

AU - Baginyan, S. A.

AU - Batusov, Yu A.

AU - Belolaptikov, I. A.

AU - Blokhintseva, T. D.

AU - Bonyushkina, A. Yu

AU - Butenko, V. A.

AU - Dem'yanov, A. A.

AU - Drozdov, V. A.

AU - Frolov, V. N.

AU - Grebenyuk, V. M.

AU - Ivanov, V. V.

AU - Kirilov, A. S.

AU - Kovalenko, V. E.

AU - Lyashenko, V. I.

AU - Moiseenko, A. S.

AU - Panyushkin, V. A.

AU - Pontecorvo, G.

AU - Pryanichnikov, V. I.

AU - Rozhdestvensky, A. M.

AU - Russakovich, N. A.

AU - Smirnova, I. Ye

AU - Balestra, F.

AU - Busso, L.

AU - Bussa, M. P.

AU - Chiosso, M.

AU - Colantoni, M. L.

AU - Ferrero, A.

AU - Ferrero, L.

AU - Garfagnini, R.

AU - Gnesi, I.

AU - Grasso, A.

AU - Maggiora, A.

AU - Maggiora, M.

AU - Piragino, G.

AU - Zosi, G. F.

AU - Fava, L.

AU - Panzieri, D.

AU - Bianconi, A.

AU - Rizzini, E. Lodi

AU - Venturelli, L.

AU - Schepkin, M. G.

PY - 2006/8

Y1 - 2006/8

N2 - This paper presents the results of a study on pion-helium interaction channels with two charged secondaries at 106 MeV by means of a visualizing technique based on a Self-Shunted Streamer Chamber (SSSC). Following previous studies at several energies, the present work is intended to cover the lack of data for energies below the Δ(1232) threshold in 4He, and to reveal new phenomenology far from the Δ activation. Relative branching ratios for different channels are given, as well as new evidence for single charge exchange reaction and for clustering effects between neutron and 3He in the neutron knockout reaction. First evidence for the existence of a single-gamma emission channel is presented. Comparison of the differential cross-sections, deduced from the elastic and single-gamma emission events, with the elastic cross-sections obtained in previous measurements is performed. The energy distributions of the emitted single gammas are also presented; fits with Planck's radiation distribution give good χ2 revealing possible nucleus' black-body-like behaviour.The black-body temperature for 4He nucleus in the aforementioned conditions is extracted.

AB - This paper presents the results of a study on pion-helium interaction channels with two charged secondaries at 106 MeV by means of a visualizing technique based on a Self-Shunted Streamer Chamber (SSSC). Following previous studies at several energies, the present work is intended to cover the lack of data for energies below the Δ(1232) threshold in 4He, and to reveal new phenomenology far from the Δ activation. Relative branching ratios for different channels are given, as well as new evidence for single charge exchange reaction and for clustering effects between neutron and 3He in the neutron knockout reaction. First evidence for the existence of a single-gamma emission channel is presented. Comparison of the differential cross-sections, deduced from the elastic and single-gamma emission events, with the elastic cross-sections obtained in previous measurements is performed. The energy distributions of the emitted single gammas are also presented; fits with Planck's radiation distribution give good χ2 revealing possible nucleus' black-body-like behaviour.The black-body temperature for 4He nucleus in the aforementioned conditions is extracted.

UR - http://www.scopus.com/inward/record.url?scp=34249893666&partnerID=8YFLogxK

U2 - 10.1393/ncb/i2007-10010-y

DO - 10.1393/ncb/i2007-10010-y

M3 - Article

SN - 1594-9982

VL - 121

SP - 771

EP - 780

JO - Nuovo Cimento della Societa Italiana di Fisica B

JF - Nuovo Cimento della Societa Italiana di Fisica B

IS - 8

ER -

π^±4-He interactions at 218 MeV/c

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