The 8He and 10He spectra studied in the (t, p) reaction

M. S. Golovkov; L. V. Grigorenko; G. M. Ter-Akopian; A. S. Fomichev; Yu Ts Oganessian; V. A. Gorshkov; S. A. Krupko; A. M. Rodin; S. I. Sidorchuk; R. S. Slepnev; S. V. Stepantsov; R. Wolski; D. Y. Pang; V. Chudoba; A. A. Korsheninnikov; E. A. Kuzmin; E. Yu Nikolskii; B. G. Novatskii; D. N. Stepanov; P. Roussel-Chomaz; W. Mittig; A. Ninane; F. Hanappe; L. Stuttgé; A. A. Yukhimchuk; V. V. Perevozchikov; Yu I. Vinogradov; S. K. Grishechkin; S. V. Zlatoustovskiy

doi:10.1016/j.physletb.2008.12.052

The ⁸He and ¹⁰He spectra studied in the (t, p) reaction

M. S. Golovkov
, L. V. Grigorenko
, G. M. Ter-Akopian^*
, A. S. Fomichev
, Yu Ts Oganessian
, V. A. Gorshkov
, S. A. Krupko
, A. M. Rodin
, S. I. Sidorchuk
, R. S. Slepnev
, S. V. Stepantsov
, R. Wolski
, D. Y. Pang
, V. Chudoba
, A. A. Korsheninnikov
, E. A. Kuzmin
, E. Yu Nikolskii
, B. G. Novatskii
, D. N. Stepanov
, P. Roussel-Chomaz

W. Mittig, A. Ninane, F. Hanappe, L. Stuttgé, A. A. Yukhimchuk, V. V. Perevozchikov, Yu I. Vinogradov, S. K. Grishechkin, S. V. Zlatoustovskiy

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

72 Scopus citations

Abstract

The low-lying spectra of ⁸He and ¹⁰He nuclei were studied in the ³H(⁶He, p)⁸He and ³H(⁸He, p)¹⁰He transfer reactions. The 0⁺ ground state (g.s.) of ⁸He and excited states, 2⁺ at 3.6 - 3.9 MeV and (1⁺) at 5.3 - 5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr, respectively. Some evidence for a ⁸He state at about 7.5 MeV was obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in ⁸He and relate it to the population of a 1^- continuum (soft dipole excitation) with a peak value at about 3 MeV. The lowest energy group of events in the ¹⁰He spectrum was observed at ∼3 MeV with a cross section of ∼ 140 μb / sr. We argue that this result is consistent with the previously reported observation of ¹⁰He providing the new ¹⁰He g.s. position at about 3 MeV.

Original language	English
Pages (from-to)	22-29
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	672
Issue number	1
DOIs	https://doi.org/10.1016/j.physletb.2008.12.052
State	Published - 9 Feb 2009
Externally published	Yes

Keywords

He
He beams
Hyperspherical harmonic method
Neutron halo
Resonance states
Soft dipole mode
Tritium gas target

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10.1016/j.physletb.2008.12.052

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Golovkov, M. S., Grigorenko, L. V., Ter-Akopian, G. M., Fomichev, A. S., Oganessian, Y. T., Gorshkov, V. A., Krupko, S. A., Rodin, A. M., Sidorchuk, S. I., Slepnev, R. S., Stepantsov, S. V., Wolski, R., Pang, D. Y., Chudoba, V., Korsheninnikov, A. A., Kuzmin, E. A., Nikolskii, E. Y., Novatskii, B. G., Stepanov, D. N., ... Zlatoustovskiy, S. V. (2009). The ⁸He and ¹⁰He spectra studied in the (t, p) reaction. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 672(1), 22-29. https://doi.org/10.1016/j.physletb.2008.12.052

@article{170cd4e34ce64151b8aaebafa5c2e89e,

title = "The 8He and 10He spectra studied in the (t, p) reaction",

abstract = "The low-lying spectra of 8He and 10He nuclei were studied in the 3H(6He, p)8He and 3H(8He, p)10He transfer reactions. The 0+ ground state (g.s.) of 8He and excited states, 2+ at 3.6 - 3.9 MeV and (1+) at 5.3 - 5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr, respectively. Some evidence for a 8He state at about 7.5 MeV was obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in 8He and relate it to the population of a 1- continuum (soft dipole excitation) with a peak value at about 3 MeV. The lowest energy group of events in the 10He spectrum was observed at ∼3 MeV with a cross section of ∼ 140 μb / sr. We argue that this result is consistent with the previously reported observation of 10He providing the new 10He g.s. position at about 3 MeV.",

keywords = "He, He beams, Hyperspherical harmonic method, Neutron halo, Resonance states, Soft dipole mode, Tritium gas target",

author = "Golovkov, \{M. S.\} and Grigorenko, \{L. V.\} and Ter-Akopian, \{G. M.\} and Fomichev, \{A. S.\} and Oganessian, \{Yu Ts\} and Gorshkov, \{V. A.\} and Krupko, \{S. A.\} and Rodin, \{A. M.\} and Sidorchuk, \{S. I.\} and Slepnev, \{R. S.\} and Stepantsov, \{S. V.\} and R. Wolski and Pang, \{D. Y.\} and V. Chudoba and Korsheninnikov, \{A. A.\} and Kuzmin, \{E. A.\} and Nikolskii, \{E. Yu\} and Novatskii, \{B. G.\} and Stepanov, \{D. N.\} and P. Roussel-Chomaz and W. Mittig and A. Ninane and F. Hanappe and L. Stuttg{\'e} and Yukhimchuk, \{A. A.\} and Perevozchikov, \{V. V.\} and Vinogradov, \{Yu I.\} and Grishechkin, \{S. K.\} and Zlatoustovskiy, \{S. V.\}",

year = "2009",

month = feb,

day = "9",

doi = "10.1016/j.physletb.2008.12.052",

language = "英语",

volume = "672",

pages = "22--29",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1",

}

Golovkov, MS, Grigorenko, LV, Ter-Akopian, GM, Fomichev, AS, Oganessian, YT, Gorshkov, VA, Krupko, SA, Rodin, AM, Sidorchuk, SI, Slepnev, RS, Stepantsov, SV, Wolski, R, Pang, DY, Chudoba, V, Korsheninnikov, AA, Kuzmin, EA, Nikolskii, EY, Novatskii, BG, Stepanov, DN, Roussel-Chomaz, P, Mittig, W, Ninane, A, Hanappe, F, Stuttgé, L, Yukhimchuk, AA, Perevozchikov, VV, Vinogradov, YI, Grishechkin, SK & Zlatoustovskiy, SV 2009, 'The ⁸He and ¹⁰He spectra studied in the (t, p) reaction', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 672, no. 1, pp. 22-29. https://doi.org/10.1016/j.physletb.2008.12.052

TY - JOUR

T1 - The 8He and 10He spectra studied in the (t, p) reaction

AU - Golovkov, M. S.

AU - Grigorenko, L. V.

AU - Ter-Akopian, G. M.

AU - Fomichev, A. S.

AU - Oganessian, Yu Ts

AU - Gorshkov, V. A.

AU - Krupko, S. A.

AU - Rodin, A. M.

AU - Sidorchuk, S. I.

AU - Slepnev, R. S.

AU - Stepantsov, S. V.

AU - Wolski, R.

AU - Pang, D. Y.

AU - Chudoba, V.

AU - Korsheninnikov, A. A.

AU - Kuzmin, E. A.

AU - Nikolskii, E. Yu

AU - Novatskii, B. G.

AU - Stepanov, D. N.

AU - Roussel-Chomaz, P.

AU - Mittig, W.

AU - Ninane, A.

AU - Hanappe, F.

AU - Stuttgé, L.

AU - Yukhimchuk, A. A.

AU - Perevozchikov, V. V.

AU - Vinogradov, Yu I.

AU - Grishechkin, S. K.

AU - Zlatoustovskiy, S. V.

PY - 2009/2/9

Y1 - 2009/2/9

N2 - The low-lying spectra of 8He and 10He nuclei were studied in the 3H(6He, p)8He and 3H(8He, p)10He transfer reactions. The 0+ ground state (g.s.) of 8He and excited states, 2+ at 3.6 - 3.9 MeV and (1+) at 5.3 - 5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr, respectively. Some evidence for a 8He state at about 7.5 MeV was obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in 8He and relate it to the population of a 1- continuum (soft dipole excitation) with a peak value at about 3 MeV. The lowest energy group of events in the 10He spectrum was observed at ∼3 MeV with a cross section of ∼ 140 μb / sr. We argue that this result is consistent with the previously reported observation of 10He providing the new 10He g.s. position at about 3 MeV.

AB - The low-lying spectra of 8He and 10He nuclei were studied in the 3H(6He, p)8He and 3H(8He, p)10He transfer reactions. The 0+ ground state (g.s.) of 8He and excited states, 2+ at 3.6 - 3.9 MeV and (1+) at 5.3 - 5.5 MeV, were populated with cross sections of 200, 100-250, and 90-125 μb/sr, respectively. Some evidence for a 8He state at about 7.5 MeV was obtained. We discuss a possible nature of the near-threshold anomaly above 2.14 MeV in 8He and relate it to the population of a 1- continuum (soft dipole excitation) with a peak value at about 3 MeV. The lowest energy group of events in the 10He spectrum was observed at ∼3 MeV with a cross section of ∼ 140 μb / sr. We argue that this result is consistent with the previously reported observation of 10He providing the new 10He g.s. position at about 3 MeV.

KW - He

KW - He beams

KW - Hyperspherical harmonic method

KW - Neutron halo

KW - Resonance states

KW - Soft dipole mode

KW - Tritium gas target

UR - https://www.scopus.com/pages/publications/58349108071

U2 - 10.1016/j.physletb.2008.12.052

DO - 10.1016/j.physletb.2008.12.052

M3 - 文章

AN - SCOPUS:58349108071

SN - 0370-2693

VL - 672

SP - 22

EP - 29

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1

ER -

The ⁸He and ¹⁰He spectra studied in the (t, p) reaction

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Keywords

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