The role of neutrinos in explosive nucleosynthesis

Carla Fröhlich; M. Liebendörfer; F. K. Thielemann; G. Martínez Pinedo; K. Langanke; N. T. Zinner; W. R. Hix; E. Bravo

The role of neutrinos in explosive nucleosynthesis

Carla Fröhlich, M. Liebendörfer, F. K. Thielemann, G. Martínez Pinedo, K. Langanke, N. T. Zinner, W. R. Hix, E. Bravo

Theoretical and Computational Physics

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present a new primary nucleosynthesis process, the n p-process, occurring in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. The capture of these neutrons permits to overcome the long beta-decay lifetimes of proton-rich nuclei like ⁶⁴Ge, allowing the nucleosynthesis flow to proceed to nuclei with mass numbers A > 64. This process is a possible candidate to explain the origin of the solar abundances of the light p-nuclei (such as ^92;94Mo and PRu) and also offers a natural explanation for the large abundance of Sr (and other elements beyond Fe) seen in the very early stage of the galactic evolution.

Original language	English
Journal	Proceedings of Science
State	Published - 2006
Event	9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006 - Geneva, Switzerland Duration: Jun 25 2006 → Jun 30 2006

Cite this

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title = "The role of neutrinos in explosive nucleosynthesis",

abstract = "We present a new primary nucleosynthesis process, the n p-process, occurring in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. The capture of these neutrons permits to overcome the long beta-decay lifetimes of proton-rich nuclei like 64Ge, allowing the nucleosynthesis flow to proceed to nuclei with mass numbers A > 64. This process is a possible candidate to explain the origin of the solar abundances of the light p-nuclei (such as 92;94Mo and PRu) and also offers a natural explanation for the large abundance of Sr (and other elements beyond Fe) seen in the very early stage of the galactic evolution.",

author = "Carla Fr{\"o}hlich and M. Liebend{\"o}rfer and Thielemann, {F. K.} and {Mart{\'i}nez Pinedo}, G. and K. Langanke and Zinner, {N. T.} and Hix, {W. R.} and E. Bravo",

year = "2006",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

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note = "9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006 ; Conference date: 25-06-2006 Through 30-06-2006",

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TY - JOUR

T1 - The role of neutrinos in explosive nucleosynthesis

AU - Fröhlich, Carla

AU - Liebendörfer, M.

AU - Thielemann, F. K.

AU - Martínez Pinedo, G.

AU - Langanke, K.

AU - Zinner, N. T.

AU - Hix, W. R.

AU - Bravo, E.

PY - 2006

Y1 - 2006

N2 - We present a new primary nucleosynthesis process, the n p-process, occurring in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. The capture of these neutrons permits to overcome the long beta-decay lifetimes of proton-rich nuclei like 64Ge, allowing the nucleosynthesis flow to proceed to nuclei with mass numbers A > 64. This process is a possible candidate to explain the origin of the solar abundances of the light p-nuclei (such as 92;94Mo and PRu) and also offers a natural explanation for the large abundance of Sr (and other elements beyond Fe) seen in the very early stage of the galactic evolution.

AB - We present a new primary nucleosynthesis process, the n p-process, occurring in supernovae (and possibly gamma-ray bursts) when strong neutrino fluxes create proton-rich ejecta. In this process, antineutrino absorptions in the proton-rich environment produce neutrons that are immediately captured by neutron-deficient nuclei. The capture of these neutrons permits to overcome the long beta-decay lifetimes of proton-rich nuclei like 64Ge, allowing the nucleosynthesis flow to proceed to nuclei with mass numbers A > 64. This process is a possible candidate to explain the origin of the solar abundances of the light p-nuclei (such as 92;94Mo and PRu) and also offers a natural explanation for the large abundance of Sr (and other elements beyond Fe) seen in the very early stage of the galactic evolution.

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M3 - Conference article

AN - SCOPUS:84887449035

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 9th International Symposium on Nuclear Astrophysics - Nuclei in the Cosmos, NIC 2006

Y2 - 25 June 2006 through 30 June 2006

ER -

The role of neutrinos in explosive nucleosynthesis

Abstract

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