Galactic production of 138La: Impact of 138,139La statistical properties

B. V. Kheswa; M. Wiedeking; F. Giacoppo; S. Goriely; M. Guttormsen; A. C. Larsen; F. L. Bello Garrote; T. K. Eriksen; A. Görgen; T. W. Hagen; P. E. Koehler; M. Klintefjord; H. T. Nyhus; P. Papka; T. Renstrøm; S. Rose; E. Sahin; S. Siem; T. Tornyi

doi:10.1016/j.physletb.2015.03.065

Galactic production of ¹³⁸La: Impact of ^138,139La statistical properties

B. V. Kheswa
, M. Wiedeking
, F. Giacoppo
, S. Goriely
, M. Guttormsen
, A. C. Larsen
, F. L. Bello Garrote
, T. K. Eriksen
, A. Görgen
, T. W. Hagen
, P. E. Koehler
, M. Klintefjord
, H. T. Nyhus
, P. Papka
, T. Renstrøm
, S. Rose
, E. Sahin
, S. Siem
, T. Tornyi

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

43 Citations (Scopus)

Abstract

The γ-ray strength functions and nuclear level densities of ¹³⁸La and ¹³⁹La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections to investigate the production and destruction of the p-nucleus ¹³⁸La in the photodisintegration process. The results confirm the underproduction of ¹³⁸La in the p-process with respect to the observed abundances and strongly support the ν-process through ν_e capture on ¹³⁸Ba as the main contributor to the synthesis of ¹³⁸La in Type II supernovae.

Original language	English
Pages (from-to)	268-272
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	744
DOIs	https://doi.org/10.1016/j.physletb.2015.03.065
Publication status	Published - 1 May 2015
Externally published	Yes

Keywords

Maxwellian averaged cross-sections
Nuclear level densities
γ-ray strength functions

ASJC Scopus subject areas

Nuclear and High Energy Physics

Access to Document

10.1016/j.physletb.2015.03.065

Cite this

Kheswa, B. V., Wiedeking, M., Giacoppo, F., Goriely, S., Guttormsen, M., Larsen, A. C., Bello Garrote, F. L., Eriksen, T. K., Görgen, A., Hagen, T. W., Koehler, P. E., Klintefjord, M., Nyhus, H. T., Papka, P., Renstrøm, T., Rose, S., Sahin, E., Siem, S., & Tornyi, T. (2015). Galactic production of ¹³⁸La: Impact of ^138,139La statistical properties. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 744, 268-272. https://doi.org/10.1016/j.physletb.2015.03.065

@article{21fb816bfc584f37b7943babc2dd8d7e,

title = "Galactic production of 138La: Impact of 138,139La statistical properties",

abstract = "The γ-ray strength functions and nuclear level densities of 138La and 139La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections to investigate the production and destruction of the p-nucleus 138La in the photodisintegration process. The results confirm the underproduction of 138La in the p-process with respect to the observed abundances and strongly support the ν-process through νe capture on 138Ba as the main contributor to the synthesis of 138La in Type II supernovae.",

keywords = "Maxwellian averaged cross-sections, Nuclear level densities, γ-ray strength functions",

author = "Kheswa, \{B. V.\} and M. Wiedeking and F. Giacoppo and S. Goriely and M. Guttormsen and Larsen, \{A. C.\} and \{Bello Garrote\}, \{F. L.\} and Eriksen, \{T. K.\} and A. G{\"o}rgen and Hagen, \{T. W.\} and Koehler, \{P. E.\} and M. Klintefjord and Nyhus, \{H. T.\} and P. Papka and T. Renstr{\o}m and S. Rose and E. Sahin and S. Siem and T. Tornyi",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.",

year = "2015",

month = may,

day = "1",

doi = "10.1016/j.physletb.2015.03.065",

language = "English",

volume = "744",

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

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Kheswa, BV, Wiedeking, M, Giacoppo, F, Goriely, S, Guttormsen, M, Larsen, AC, Bello Garrote, FL, Eriksen, TK, Görgen, A, Hagen, TW, Koehler, PE, Klintefjord, M, Nyhus, HT, Papka, P, Renstrøm, T, Rose, S, Sahin, E, Siem, S & Tornyi, T 2015, 'Galactic production of ¹³⁸La: Impact of ^138,139La statistical properties', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 744, pp. 268-272. https://doi.org/10.1016/j.physletb.2015.03.065

TY - JOUR

T1 - Galactic production of 138La

T2 - Impact of 138,139La statistical properties

AU - Kheswa, B. V.

AU - Wiedeking, M.

AU - Giacoppo, F.

AU - Goriely, S.

AU - Guttormsen, M.

AU - Larsen, A. C.

AU - Bello Garrote, F. L.

AU - Eriksen, T. K.

AU - Görgen, A.

AU - Hagen, T. W.

AU - Koehler, P. E.

AU - Klintefjord, M.

AU - Nyhus, H. T.

AU - Papka, P.

AU - Renstrøm, T.

AU - Rose, S.

AU - Sahin, E.

AU - Siem, S.

AU - Tornyi, T.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - The γ-ray strength functions and nuclear level densities of 138La and 139La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections to investigate the production and destruction of the p-nucleus 138La in the photodisintegration process. The results confirm the underproduction of 138La in the p-process with respect to the observed abundances and strongly support the ν-process through νe capture on 138Ba as the main contributor to the synthesis of 138La in Type II supernovae.

AB - The γ-ray strength functions and nuclear level densities of 138La and 139La have been measured below the neutron separation energies. These new data were used to calculate astrophysical Maxwellian-averaged (n, γ) cross-sections to investigate the production and destruction of the p-nucleus 138La in the photodisintegration process. The results confirm the underproduction of 138La in the p-process with respect to the observed abundances and strongly support the ν-process through νe capture on 138Ba as the main contributor to the synthesis of 138La in Type II supernovae.

KW - Maxwellian averaged cross-sections

KW - Nuclear level densities

KW - γ-ray strength functions

UR - https://www.scopus.com/pages/publications/84926687213

U2 - 10.1016/j.physletb.2015.03.065

DO - 10.1016/j.physletb.2015.03.065

M3 - Article

AN - SCOPUS:84926687213

SN - 0370-2693

VL - 744

SP - 268

EP - 272

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

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

ER -