Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103

F. Stedile, E. Fill, D. Belic, P. von Brentano, C. Fransen, A. Gade, U. Kniessl, C. Kohstall, A. Linnemann, P. Matschinsky, A. Nord, N. Pietralla, H.H. Pitz, M. Scheck, V. Werner

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1 Citation (Scopus)

Abstract

Low-lying dipole excitations in the odd-proton, midshell nucleus 103Rh were investigated in photon scattering experiments at the Stuttgart Dynamitron facility using bremsstrahlung beams with end point energies of 4.1 and 2.4 MeV. In total, 106 excited levels, most of them unknown so far, could be observed in the excitation energy range from 1.2 to 4.0 MeV. In addition to 106 transitions to the ground state (Jπ0=1/2−), 20 transitions to the low-lying Jπ=3/2− level at 295 keV and 10 transitions to the Jπ=5/2− state at 357 keV were detected. For 20 photoexcited levels spins could be suggested from the measured angular distribution data. The reduced ground-state transition strengths summed up in the energy range 2–4 MeV amount to ΣgΓred0=(16.3±1.9) meV/MeV3 corresponding, under the assumption of an electric character for all excitations, to a total excitation strength of ΣB(E1)↑=(15.6±1.8)×10−3 e2fm2. The fragmentation of the dipole strength and the decay branchings of the photoexcited levels are discussed. The observed feedings of the 295 and 357 keV levels result in a population inversion, the precondition for a possible γ-ray laser.

Original languageEnglish
Article number024320
JournalPhysical Review C
Volume63
Issue number2
DOIs
Publication statusPublished - 24 Jan 2001
Externally publishedYes

Cite this

Stedile, F., Fill, E., Belic, D., von Brentano, P., Fransen, C., Gade, A., ... Werner, V. (2001). Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103. Physical Review C, 63(2), [024320]. https://doi.org/10.1103/PhysRevC.63.024320
Stedile, F. ; Fill, E. ; Belic, D. ; von Brentano, P. ; Fransen, C. ; Gade, A. ; Kniessl, U. ; Kohstall, C. ; Linnemann, A. ; Matschinsky, P. ; Nord, A. ; Pietralla, N. ; Pitz, H.H. ; Scheck, M. ; Werner, V. / Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103. In: Physical Review C. 2001 ; Vol. 63, No. 2.
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abstract = "Low-lying dipole excitations in the odd-proton, midshell nucleus 103Rh were investigated in photon scattering experiments at the Stuttgart Dynamitron facility using bremsstrahlung beams with end point energies of 4.1 and 2.4 MeV. In total, 106 excited levels, most of them unknown so far, could be observed in the excitation energy range from 1.2 to 4.0 MeV. In addition to 106 transitions to the ground state (Jπ0=1/2−), 20 transitions to the low-lying Jπ=3/2− level at 295 keV and 10 transitions to the Jπ=5/2− state at 357 keV were detected. For 20 photoexcited levels spins could be suggested from the measured angular distribution data. The reduced ground-state transition strengths summed up in the energy range 2–4 MeV amount to ΣgΓred0=(16.3±1.9) meV/MeV3 corresponding, under the assumption of an electric character for all excitations, to a total excitation strength of ΣB(E1)↑=(15.6±1.8)×10−3 e2fm2. The fragmentation of the dipole strength and the decay branchings of the photoexcited levels are discussed. The observed feedings of the 295 and 357 keV levels result in a population inversion, the precondition for a possible γ-ray laser.",
author = "F. Stedile and E. Fill and D. Belic and {von Brentano}, P. and C. Fransen and A. Gade and U. Kniessl and C. Kohstall and A. Linnemann and P. Matschinsky and A. Nord and N. Pietralla and H.H. Pitz and M. Scheck and V. Werner",
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Stedile, F, Fill, E, Belic, D, von Brentano, P, Fransen, C, Gade, A, Kniessl, U, Kohstall, C, Linnemann, A, Matschinsky, P, Nord, A, Pietralla, N, Pitz, HH, Scheck, M & Werner, V 2001, 'Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103', Physical Review C, vol. 63, no. 2, 024320. https://doi.org/10.1103/PhysRevC.63.024320

Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103. / Stedile, F.; Fill, E.; Belic, D.; von Brentano, P.; Fransen, C.; Gade, A.; Kniessl, U.; Kohstall, C.; Linnemann, A.; Matschinsky, P.; Nord, A.; Pietralla, N.; Pitz, H.H.; Scheck, M.; Werner, V.

In: Physical Review C, Vol. 63, No. 2, 024320, 24.01.2001.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103

AU - Stedile, F.

AU - Fill, E.

AU - Belic, D.

AU - von Brentano, P.

AU - Fransen, C.

AU - Gade, A.

AU - Kniessl, U.

AU - Kohstall, C.

AU - Linnemann, A.

AU - Matschinsky, P.

AU - Nord, A.

AU - Pietralla, N.

AU - Pitz, H.H.

AU - Scheck, M.

AU - Werner, V.

PY - 2001/1/24

Y1 - 2001/1/24

N2 - Low-lying dipole excitations in the odd-proton, midshell nucleus 103Rh were investigated in photon scattering experiments at the Stuttgart Dynamitron facility using bremsstrahlung beams with end point energies of 4.1 and 2.4 MeV. In total, 106 excited levels, most of them unknown so far, could be observed in the excitation energy range from 1.2 to 4.0 MeV. In addition to 106 transitions to the ground state (Jπ0=1/2−), 20 transitions to the low-lying Jπ=3/2− level at 295 keV and 10 transitions to the Jπ=5/2− state at 357 keV were detected. For 20 photoexcited levels spins could be suggested from the measured angular distribution data. The reduced ground-state transition strengths summed up in the energy range 2–4 MeV amount to ΣgΓred0=(16.3±1.9) meV/MeV3 corresponding, under the assumption of an electric character for all excitations, to a total excitation strength of ΣB(E1)↑=(15.6±1.8)×10−3 e2fm2. The fragmentation of the dipole strength and the decay branchings of the photoexcited levels are discussed. The observed feedings of the 295 and 357 keV levels result in a population inversion, the precondition for a possible γ-ray laser.

AB - Low-lying dipole excitations in the odd-proton, midshell nucleus 103Rh were investigated in photon scattering experiments at the Stuttgart Dynamitron facility using bremsstrahlung beams with end point energies of 4.1 and 2.4 MeV. In total, 106 excited levels, most of them unknown so far, could be observed in the excitation energy range from 1.2 to 4.0 MeV. In addition to 106 transitions to the ground state (Jπ0=1/2−), 20 transitions to the low-lying Jπ=3/2− level at 295 keV and 10 transitions to the Jπ=5/2− state at 357 keV were detected. For 20 photoexcited levels spins could be suggested from the measured angular distribution data. The reduced ground-state transition strengths summed up in the energy range 2–4 MeV amount to ΣgΓred0=(16.3±1.9) meV/MeV3 corresponding, under the assumption of an electric character for all excitations, to a total excitation strength of ΣB(E1)↑=(15.6±1.8)×10−3 e2fm2. The fragmentation of the dipole strength and the decay branchings of the photoexcited levels are discussed. The observed feedings of the 295 and 357 keV levels result in a population inversion, the precondition for a possible γ-ray laser.

U2 - 10.1103/PhysRevC.63.024320

DO - 10.1103/PhysRevC.63.024320

M3 - Article

VL - 63

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 2

M1 - 024320

ER -

Stedile F, Fill E, Belic D, von Brentano P, Fransen C, Gade A et al. Low-lying dipole excitations in the odd-proton, midshell nucleus Rh-103. Physical Review C. 2001 Jan 24;63(2). 024320. https://doi.org/10.1103/PhysRevC.63.024320