Energy separation of the 1+/1− parity doublet in 20Ne

J. Beller, J. Wagner, M Ahmed, D. Deleanu, D. M. Filipescu, T. Glodariu, J. Isaak, J. H. Kelley, E. Kwan, N. Pietralla, R. Raut, C. Romig, G. Rusev, Marcus Scheck, S C Stave, A Tonchev, W. Tornow, H. R. Weller, N. V. Zamfir, M. Zweidinger

Research output: Contribution to journalArticle

Abstract

The parity doublet of 1+/1− states of Ne-20 at 11.26 MeV excitation energy is one of the best known test cases to study the weak part of the nuclear Hamiltonian. The feasibility of parity violation experiments depend on the effective nuclear enhancement factor (RN/|E(1+) − E(l−)|) which amplifies the impact of the matrix element of the weak interaction on observables indicating parity mixing. An extreme large value of Rn/|E(1+) − E(l−)| = (670 ± 7000) MeV−1 was reported for the doublet in 20Ne. The large uncertainty depends amongst others on the large uncertainty of |E(1+) − E(l−)| = 7.7±5.5 keV of the parity doublet. Nuclear resonance fluorescence (NRF) experiments with linearly and circularly polarized photon beams were performed at the High Intensity Gamma-Ray Source at Duke University, Durham, NC, USA, to determine the energy difference of the parity doublet with higher precision. The different angular distributions for 0+ → 1− → 0+ and 0+ → 1+ → 0+ NRF cascades in polarized γ-ray beams were used to determine the energy difference of the parity doublet to 2.9(13) keV.
Original languageEnglish
Article number012003
JournalJournal of Physics: Conference Series
Volume366
DOIs
Publication statusPublished - 2011
Externally publishedYes
EventXIX International School on Nuclear Physics, Neutron Physics, and Nuclear Energy - Varna, Bulgaria
Duration: 23 Sep 201128 Sep 2011

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parity
resonance fluorescence
energy
photon beams
rays
cascades
angular distribution
augmentation
matrices
excitation

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Beller, J., Wagner, J., Ahmed, M., Deleanu, D., Filipescu, D. M., Glodariu, T., ... Zweidinger, M. (2011). Energy separation of the 1+/1− parity doublet in 20Ne. Journal of Physics: Conference Series, 366, [012003]. https://doi.org/10.1088/1742-6596/366/1/012003
Beller, J. ; Wagner, J. ; Ahmed, M ; Deleanu, D. ; Filipescu, D. M. ; Glodariu, T. ; Isaak, J. ; Kelley, J. H. ; Kwan, E. ; Pietralla, N. ; Raut, R. ; Romig, C. ; Rusev, G. ; Scheck, Marcus ; Stave, S C ; Tonchev, A ; Tornow, W. ; Weller, H. R. ; Zamfir, N. V. ; Zweidinger, M. / Energy separation of the 1+/1− parity doublet in 20Ne. In: Journal of Physics: Conference Series. 2011 ; Vol. 366.
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abstract = "The parity doublet of 1+/1− states of Ne-20 at 11.26 MeV excitation energy is one of the best known test cases to study the weak part of the nuclear Hamiltonian. The feasibility of parity violation experiments depend on the effective nuclear enhancement factor (RN/|E(1+) − E(l−)|) which amplifies the impact of the matrix element of the weak interaction on observables indicating parity mixing. An extreme large value of Rn/|E(1+) − E(l−)| = (670 ± 7000) MeV−1 was reported for the doublet in 20Ne. The large uncertainty depends amongst others on the large uncertainty of |E(1+) − E(l−)| = 7.7±5.5 keV of the parity doublet. Nuclear resonance fluorescence (NRF) experiments with linearly and circularly polarized photon beams were performed at the High Intensity Gamma-Ray Source at Duke University, Durham, NC, USA, to determine the energy difference of the parity doublet with higher precision. The different angular distributions for 0+ → 1− → 0+ and 0+ → 1+ → 0+ NRF cascades in polarized γ-ray beams were used to determine the energy difference of the parity doublet to 2.9(13) keV.",
author = "J. Beller and J. Wagner and M Ahmed and D. Deleanu and Filipescu, {D. M.} and T. Glodariu and J. Isaak and Kelley, {J. H.} and E. Kwan and N. Pietralla and R. Raut and C. Romig and G. Rusev and Marcus Scheck and Stave, {S C} and A Tonchev and W. Tornow and Weller, {H. R.} and Zamfir, {N. V.} and M. Zweidinger",
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Beller, J, Wagner, J, Ahmed, M, Deleanu, D, Filipescu, DM, Glodariu, T, Isaak, J, Kelley, JH, Kwan, E, Pietralla, N, Raut, R, Romig, C, Rusev, G, Scheck, M, Stave, SC, Tonchev, A, Tornow, W, Weller, HR, Zamfir, NV & Zweidinger, M 2011, 'Energy separation of the 1+/1− parity doublet in 20Ne', Journal of Physics: Conference Series, vol. 366, 012003. https://doi.org/10.1088/1742-6596/366/1/012003

Energy separation of the 1+/1− parity doublet in 20Ne. / Beller, J.; Wagner, J.; Ahmed, M; Deleanu, D.; Filipescu, D. M.; Glodariu, T.; Isaak, J.; Kelley, J. H.; Kwan, E.; Pietralla, N.; Raut, R.; Romig, C.; Rusev, G.; Scheck, Marcus; Stave, S C ; Tonchev, A; Tornow, W.; Weller, H. R.; Zamfir, N. V.; Zweidinger, M.

In: Journal of Physics: Conference Series, Vol. 366, 012003, 2011.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Energy separation of the 1+/1− parity doublet in 20Ne

AU - Beller, J.

AU - Wagner, J.

AU - Ahmed, M

AU - Deleanu, D.

AU - Filipescu, D. M.

AU - Glodariu, T.

AU - Isaak, J.

AU - Kelley, J. H.

AU - Kwan, E.

AU - Pietralla, N.

AU - Raut, R.

AU - Romig, C.

AU - Rusev, G.

AU - Scheck, Marcus

AU - Stave, S C

AU - Tonchev, A

AU - Tornow, W.

AU - Weller, H. R.

AU - Zamfir, N. V.

AU - Zweidinger, M.

PY - 2011

Y1 - 2011

N2 - The parity doublet of 1+/1− states of Ne-20 at 11.26 MeV excitation energy is one of the best known test cases to study the weak part of the nuclear Hamiltonian. The feasibility of parity violation experiments depend on the effective nuclear enhancement factor (RN/|E(1+) − E(l−)|) which amplifies the impact of the matrix element of the weak interaction on observables indicating parity mixing. An extreme large value of Rn/|E(1+) − E(l−)| = (670 ± 7000) MeV−1 was reported for the doublet in 20Ne. The large uncertainty depends amongst others on the large uncertainty of |E(1+) − E(l−)| = 7.7±5.5 keV of the parity doublet. Nuclear resonance fluorescence (NRF) experiments with linearly and circularly polarized photon beams were performed at the High Intensity Gamma-Ray Source at Duke University, Durham, NC, USA, to determine the energy difference of the parity doublet with higher precision. The different angular distributions for 0+ → 1− → 0+ and 0+ → 1+ → 0+ NRF cascades in polarized γ-ray beams were used to determine the energy difference of the parity doublet to 2.9(13) keV.

AB - The parity doublet of 1+/1− states of Ne-20 at 11.26 MeV excitation energy is one of the best known test cases to study the weak part of the nuclear Hamiltonian. The feasibility of parity violation experiments depend on the effective nuclear enhancement factor (RN/|E(1+) − E(l−)|) which amplifies the impact of the matrix element of the weak interaction on observables indicating parity mixing. An extreme large value of Rn/|E(1+) − E(l−)| = (670 ± 7000) MeV−1 was reported for the doublet in 20Ne. The large uncertainty depends amongst others on the large uncertainty of |E(1+) − E(l−)| = 7.7±5.5 keV of the parity doublet. Nuclear resonance fluorescence (NRF) experiments with linearly and circularly polarized photon beams were performed at the High Intensity Gamma-Ray Source at Duke University, Durham, NC, USA, to determine the energy difference of the parity doublet with higher precision. The different angular distributions for 0+ → 1− → 0+ and 0+ → 1+ → 0+ NRF cascades in polarized γ-ray beams were used to determine the energy difference of the parity doublet to 2.9(13) keV.

U2 - 10.1088/1742-6596/366/1/012003

DO - 10.1088/1742-6596/366/1/012003

M3 - Article

VL - 366

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

M1 - 012003

ER -

Beller J, Wagner J, Ahmed M, Deleanu D, Filipescu DM, Glodariu T et al. Energy separation of the 1+/1− parity doublet in 20Ne. Journal of Physics: Conference Series. 2011;366. 012003. https://doi.org/10.1088/1742-6596/366/1/012003