State-selective high-energy excitation of nuclei by resonant positron annihilation

State-selective high-energy excitation of nuclei by resonant positron annihilation

In the annihilation of a positron with a bound atomic electron, the virtual γ photon created may excite the atomic nucleus. We put forward this effect as a spectroscopic tool for an energy-selective excitation of nuclear transitions. This scheme can efficiently populate nuclear levels of arbitrary m...

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Main Authors: Nikolay A. Belov, Zoltán Harman
Format: Article
Language:English
Published: Elsevier 2015-02-01
Series:Physics Letters B
Online Access:http://www.sciencedirect.com/science/article/pii/S0370269314008739
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spelling doaj-111ab360bdf74e1cbd31d9876d76e1072020-11-24T20:44:32ZengElsevierPhysics Letters B0370-26932015-02-017416165State-selective high-energy excitation of nuclei by resonant positron annihilationNikolay A. Belov0Zoltán Harman1Corresponding author.; Max Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, GermanyMax Planck Institute for Nuclear Physics, Saupfercheckweg 1, 69117 Heidelberg, GermanyIn the annihilation of a positron with a bound atomic electron, the virtual γ photon created may excite the atomic nucleus. We put forward this effect as a spectroscopic tool for an energy-selective excitation of nuclear transitions. This scheme can efficiently populate nuclear levels of arbitrary multipolarities in the MeV regime, including giant resonances and monopole transitions. In certain cases, it may have higher cross sections than the conventionally used Coulomb excitation and it can even occur with high probability when the latter is energetically forbidden. Keywords: Positron annihilation, Nuclear excitation, Giant resonanceshttp://www.sciencedirect.com/science/article/pii/S0370269314008739
collection DOAJ
language English
format Article
sources DOAJ
author Nikolay A. Belov
Zoltán Harman
spellingShingle Nikolay A. Belov
Zoltán Harman
State-selective high-energy excitation of nuclei by resonant positron annihilation
Physics Letters B
author_facet Nikolay A. Belov
Zoltán Harman
author_sort Nikolay A. Belov
title State-selective high-energy excitation of nuclei by resonant positron annihilation
title_short State-selective high-energy excitation of nuclei by resonant positron annihilation
title_full State-selective high-energy excitation of nuclei by resonant positron annihilation
title_fullStr State-selective high-energy excitation of nuclei by resonant positron annihilation
title_full_unstemmed State-selective high-energy excitation of nuclei by resonant positron annihilation
title_sort state-selective high-energy excitation of nuclei by resonant positron annihilation
publisher Elsevier
series Physics Letters B
issn 0370-2693
publishDate 2015-02-01
description In the annihilation of a positron with a bound atomic electron, the virtual γ photon created may excite the atomic nucleus. We put forward this effect as a spectroscopic tool for an energy-selective excitation of nuclear transitions. This scheme can efficiently populate nuclear levels of arbitrary multipolarities in the MeV regime, including giant resonances and monopole transitions. In certain cases, it may have higher cross sections than the conventionally used Coulomb excitation and it can even occur with high probability when the latter is energetically forbidden. Keywords: Positron annihilation, Nuclear excitation, Giant resonances
url http://www.sciencedirect.com/science/article/pii/S0370269314008739
work_keys_str_mv AT nikolayabelov stateselectivehighenergyexcitationofnucleibyresonantpositronannihilation
AT zoltanharman stateselectivehighenergyexcitationofnucleibyresonantpositronannihilation
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