Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique

C. Romig; D. Savran; J. Beller; J. Birkhan; A. Endres; M. Fritzsche; J. Glorius; J. Isaak; N. Pietralla; M. Scheck; L. Schnorrenberger; K. Sonnabend; M. Zweidinger

doi:10.1016/j.physletb.2015.04.013

Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique

C. Romig, D. Savran, J. Beller, J. Birkhan, A. Endres, M. Fritzsche, J. Glorius, J. Isaak, N. Pietralla, M. Scheck, L. Schnorrenberger, K. Sonnabend, M. Zweidinger

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Abstract

The technique of self absorption has been applied for the first time to study the decay pattern of low-lying dipole states of Ce-140. In particular, ground-state transition widths Gamma(0) and branching ratios Gamma(0)/Gamma to the ground state have been investigated in the energy domain of the pygmy dipole resonance. Relative self-absorption measurements allow for a model-independent determination of Gamma(0). Without the need to perform a full spectroscopy of all decay channels, also the branching ratio to the ground state can be determined. The experiment on Ce-140 was conducted at the bremsstrahlung facility of the superconducting Darmstadt electron linear accelerator S-DALINAC. In total, the self-absorption and, thus, Gamma(0) were determined for 104 excited states of Ce-140. The obtained results are presented and discussed with respect to simulations of gamma cascades using the DICEBOX code.

Original language	English
Pages (from-to)	369-374
Journal	Physics Letters B
Volume	744
DOIs	https://doi.org/10.1016/j.physletb.2015.04.013
Publication status	Published - 11 May 2015

Keywords

Self absorption
Nuclear resonance fluorescence
Gamma spectroscopy
Ground-state transition width
Pygmy dipole resonance

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Romig, C., Savran, D., Beller, J., Birkhan, J., Endres, A., Fritzsche, M., Glorius, J., Isaak, J., Pietralla, N., Scheck, M., Schnorrenberger, L., Sonnabend, K., & Zweidinger, M. (2015). Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique. Physics Letters B, 744, 369-374. https://doi.org/10.1016/j.physletb.2015.04.013

Romig, C. ; Savran, D. ; Beller, J. ; Birkhan, J. ; Endres, A. ; Fritzsche, M. ; Glorius, J. ; Isaak, J. ; Pietralla, N. ; Scheck, M. ; Schnorrenberger, L. ; Sonnabend, K. ; Zweidinger, M. / Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique. In: Physics Letters B. 2015 ; Vol. 744. pp. 369-374.

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title = "Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique",

abstract = "The technique of self absorption has been applied for the first time to study the decay pattern of low-lying dipole states of Ce-140. In particular, ground-state transition widths Gamma(0) and branching ratios Gamma(0)/Gamma to the ground state have been investigated in the energy domain of the pygmy dipole resonance. Relative self-absorption measurements allow for a model-independent determination of Gamma(0). Without the need to perform a full spectroscopy of all decay channels, also the branching ratio to the ground state can be determined. The experiment on Ce-140 was conducted at the bremsstrahlung facility of the superconducting Darmstadt electron linear accelerator S-DALINAC. In total, the self-absorption and, thus, Gamma(0) were determined for 104 excited states of Ce-140. The obtained results are presented and discussed with respect to simulations of gamma cascades using the DICEBOX code.",

keywords = "Self absorption, Nuclear resonance fluorescence, Gamma spectroscopy, Ground-state transition width, Pygmy dipole resonance",

author = "C. Romig and D. Savran and J. Beller and J. Birkhan and A. Endres and M. Fritzsche and J. Glorius and J. Isaak and N. Pietralla and M. Scheck and L. Schnorrenberger and K. Sonnabend and M. Zweidinger",

year = "2015",

month = may,

day = "11",

doi = "10.1016/j.physletb.2015.04.013",

language = "English",

volume = "744",

pages = "369--374",

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Romig, C, Savran, D, Beller, J, Birkhan, J, Endres, A, Fritzsche, M, Glorius, J, Isaak, J, Pietralla, N, Scheck, M, Schnorrenberger, L, Sonnabend, K & Zweidinger, M 2015, 'Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique', Physics Letters B, vol. 744, pp. 369-374. https://doi.org/10.1016/j.physletb.2015.04.013

Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique. / Romig, C.; Savran, D.; Beller, J.; Birkhan, J.; Endres, A.; Fritzsche, M.; Glorius, J.; Isaak, J.; Pietralla, N.; Scheck, M.; Schnorrenberger, L.; Sonnabend, K.; Zweidinger, M.

In: Physics Letters B, Vol. 744, 11.05.2015, p. 369-374.

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

TY - JOUR

T1 - Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique

AU - Romig, C.

AU - Savran, D.

AU - Beller, J.

AU - Birkhan, J.

AU - Endres, A.

AU - Fritzsche, M.

AU - Glorius, J.

AU - Isaak, J.

AU - Pietralla, N.

AU - Scheck, M.

AU - Schnorrenberger, L.

AU - Sonnabend, K.

AU - Zweidinger, M.

PY - 2015/5/11

Y1 - 2015/5/11

N2 - The technique of self absorption has been applied for the first time to study the decay pattern of low-lying dipole states of Ce-140. In particular, ground-state transition widths Gamma(0) and branching ratios Gamma(0)/Gamma to the ground state have been investigated in the energy domain of the pygmy dipole resonance. Relative self-absorption measurements allow for a model-independent determination of Gamma(0). Without the need to perform a full spectroscopy of all decay channels, also the branching ratio to the ground state can be determined. The experiment on Ce-140 was conducted at the bremsstrahlung facility of the superconducting Darmstadt electron linear accelerator S-DALINAC. In total, the self-absorption and, thus, Gamma(0) were determined for 104 excited states of Ce-140. The obtained results are presented and discussed with respect to simulations of gamma cascades using the DICEBOX code.

AB - The technique of self absorption has been applied for the first time to study the decay pattern of low-lying dipole states of Ce-140. In particular, ground-state transition widths Gamma(0) and branching ratios Gamma(0)/Gamma to the ground state have been investigated in the energy domain of the pygmy dipole resonance. Relative self-absorption measurements allow for a model-independent determination of Gamma(0). Without the need to perform a full spectroscopy of all decay channels, also the branching ratio to the ground state can be determined. The experiment on Ce-140 was conducted at the bremsstrahlung facility of the superconducting Darmstadt electron linear accelerator S-DALINAC. In total, the self-absorption and, thus, Gamma(0) were determined for 104 excited states of Ce-140. The obtained results are presented and discussed with respect to simulations of gamma cascades using the DICEBOX code.

KW - Self absorption

KW - Nuclear resonance fluorescence

KW - Gamma spectroscopy

KW - Ground-state transition width

KW - Pygmy dipole resonance

U2 - 10.1016/j.physletb.2015.04.013

DO - 10.1016/j.physletb.2015.04.013

M3 - Article

VL - 744

SP - 369

EP - 374

JO - Physics Letters B

JF - Physics Letters B

SN - 0370-2693

ER -

Direct determination of ground-state transition widths of low-lying dipole states in Ce-140 with the self-absorption technique

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Keywords

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