Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar 33

A. Wendt, J. Taprogge, P. Reiter, P. Golubev, H. Grawe, S. Pietri, P. Boutachkov, A. Algora, F. Ameil, M. A. Bentley, A. Blazhev, D. Bloor, N. S. Bondili, M. Bowry, A. Bracco, N. Braun, F. Camera, J. Cederkäll, F. Crespi, A. De La SalleD. Dijulio, P. Doornenbal, K. Geibel, J. Gellanki, J. Gerl, J. Grbosz, G. Guastalla, T. Habermann, M. Hackstein, R. Hoischen, A. Jungclaus, E. Merchán, B. Million, A. Morales, K. Moschner, Zs Podolyák, N. Pietralla, D. Ralet, M. Reese, D. Rudolph, L. Scruton, B. Siebeck, N. Warr, O. Wieland, H. J. Wollersheim

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in Ar33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar36 beam on a Be9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The Ar33 beam hit a secondary Au197 target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ-ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of Ar33 the reduced transition strengths have been determined. With these first results the Tz=-3/2 nucleus Ar33 is now, together with Na21 (Tz=-1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

Original languageEnglish
Article number054301
JournalPhysical Review C - Nuclear Physics
Volume90
Issue number5
DOIs
Publication statusPublished - Nov 4 2014

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neutrons
nuclei
symmetry
mirrors
excitation
detectors
separators
nuclear reactions
reaction products
scintillation counters
calorimeters
energy
germanium
rays
fragmentation
purity
ion beams
fragments
spectroscopy
ions

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Wendt, A., Taprogge, J., Reiter, P., Golubev, P., Grawe, H., Pietri, S., ... Wollersheim, H. J. (2014). Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar 33. Physical Review C - Nuclear Physics, 90(5), [054301]. https://doi.org/10.1103/PhysRevC.90.054301

Isospin symmetry in the sd shell : Transition strengths in the neutron-deficient sd shell nucleus Ar 33. / Wendt, A.; Taprogge, J.; Reiter, P.; Golubev, P.; Grawe, H.; Pietri, S.; Boutachkov, P.; Algora, A.; Ameil, F.; Bentley, M. A.; Blazhev, A.; Bloor, D.; Bondili, N. S.; Bowry, M.; Bracco, A.; Braun, N.; Camera, F.; Cederkäll, J.; Crespi, F.; De La Salle, A.; Dijulio, D.; Doornenbal, P.; Geibel, K.; Gellanki, J.; Gerl, J.; Grbosz, J.; Guastalla, G.; Habermann, T.; Hackstein, M.; Hoischen, R.; Jungclaus, A.; Merchán, E.; Million, B.; Morales, A.; Moschner, K.; Podolyák, Zs; Pietralla, N.; Ralet, D.; Reese, M.; Rudolph, D.; Scruton, L.; Siebeck, B.; Warr, N.; Wieland, O.; Wollersheim, H. J.

In: Physical Review C - Nuclear Physics, Vol. 90, No. 5, 054301, 04.11.2014.

Research output: Contribution to journalArticle

Wendt, A, Taprogge, J, Reiter, P, Golubev, P, Grawe, H, Pietri, S, Boutachkov, P, Algora, A, Ameil, F, Bentley, MA, Blazhev, A, Bloor, D, Bondili, NS, Bowry, M, Bracco, A, Braun, N, Camera, F, Cederkäll, J, Crespi, F, De La Salle, A, Dijulio, D, Doornenbal, P, Geibel, K, Gellanki, J, Gerl, J, Grbosz, J, Guastalla, G, Habermann, T, Hackstein, M, Hoischen, R, Jungclaus, A, Merchán, E, Million, B, Morales, A, Moschner, K, Podolyák, Z, Pietralla, N, Ralet, D, Reese, M, Rudolph, D, Scruton, L, Siebeck, B, Warr, N, Wieland, O & Wollersheim, HJ 2014, 'Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar 33', Physical Review C - Nuclear Physics, vol. 90, no. 5, 054301. https://doi.org/10.1103/PhysRevC.90.054301
Wendt, A. ; Taprogge, J. ; Reiter, P. ; Golubev, P. ; Grawe, H. ; Pietri, S. ; Boutachkov, P. ; Algora, A. ; Ameil, F. ; Bentley, M. A. ; Blazhev, A. ; Bloor, D. ; Bondili, N. S. ; Bowry, M. ; Bracco, A. ; Braun, N. ; Camera, F. ; Cederkäll, J. ; Crespi, F. ; De La Salle, A. ; Dijulio, D. ; Doornenbal, P. ; Geibel, K. ; Gellanki, J. ; Gerl, J. ; Grbosz, J. ; Guastalla, G. ; Habermann, T. ; Hackstein, M. ; Hoischen, R. ; Jungclaus, A. ; Merchán, E. ; Million, B. ; Morales, A. ; Moschner, K. ; Podolyák, Zs ; Pietralla, N. ; Ralet, D. ; Reese, M. ; Rudolph, D. ; Scruton, L. ; Siebeck, B. ; Warr, N. ; Wieland, O. ; Wollersheim, H. J. / Isospin symmetry in the sd shell : Transition strengths in the neutron-deficient sd shell nucleus Ar 33. In: Physical Review C - Nuclear Physics. 2014 ; Vol. 90, No. 5.
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title = "Isospin symmetry in the sd shell: Transition strengths in the neutron-deficient sd shell nucleus Ar 33",
abstract = "Reduced transition strengths of the deexciting transitions from the first two excited states in Ar33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar36 beam on a Be9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The Ar33 beam hit a secondary Au197 target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ-ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of Ar33 the reduced transition strengths have been determined. With these first results the Tz=-3/2 nucleus Ar33 is now, together with Na21 (Tz=-1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.",
author = "A. Wendt and J. Taprogge and P. Reiter and P. Golubev and H. Grawe and S. Pietri and P. Boutachkov and A. Algora and F. Ameil and Bentley, {M. A.} and A. Blazhev and D. Bloor and Bondili, {N. S.} and M. Bowry and A. Bracco and N. Braun and F. Camera and J. Cederk{\"a}ll and F. Crespi and {De La Salle}, A. and D. Dijulio and P. Doornenbal and K. Geibel and J. Gellanki and J. Gerl and J. Grbosz and G. Guastalla and T. Habermann and M. Hackstein and R. Hoischen and A. Jungclaus and E. Merch{\'a}n and B. Million and A. Morales and K. Moschner and Zs Podoly{\'a}k and N. Pietralla and D. Ralet and M. Reese and D. Rudolph and L. Scruton and B. Siebeck and N. Warr and O. Wieland and Wollersheim, {H. J.}",
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T2 - Transition strengths in the neutron-deficient sd shell nucleus Ar 33

AU - Wendt, A.

AU - Taprogge, J.

AU - Reiter, P.

AU - Golubev, P.

AU - Grawe, H.

AU - Pietri, S.

AU - Boutachkov, P.

AU - Algora, A.

AU - Ameil, F.

AU - Bentley, M. A.

AU - Blazhev, A.

AU - Bloor, D.

AU - Bondili, N. S.

AU - Bowry, M.

AU - Bracco, A.

AU - Braun, N.

AU - Camera, F.

AU - Cederkäll, J.

AU - Crespi, F.

AU - De La Salle, A.

AU - Dijulio, D.

AU - Doornenbal, P.

AU - Geibel, K.

AU - Gellanki, J.

AU - Gerl, J.

AU - Grbosz, J.

AU - Guastalla, G.

AU - Habermann, T.

AU - Hackstein, M.

AU - Hoischen, R.

AU - Jungclaus, A.

AU - Merchán, E.

AU - Million, B.

AU - Morales, A.

AU - Moschner, K.

AU - Podolyák, Zs

AU - Pietralla, N.

AU - Ralet, D.

AU - Reese, M.

AU - Rudolph, D.

AU - Scruton, L.

AU - Siebeck, B.

AU - Warr, N.

AU - Wieland, O.

AU - Wollersheim, H. J.

PY - 2014/11/4

Y1 - 2014/11/4

N2 - Reduced transition strengths of the deexciting transitions from the first two excited states in Ar33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar36 beam on a Be9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The Ar33 beam hit a secondary Au197 target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ-ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of Ar33 the reduced transition strengths have been determined. With these first results the Tz=-3/2 nucleus Ar33 is now, together with Na21 (Tz=-1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

AB - Reduced transition strengths of the deexciting transitions from the first two excited states in Ar33 were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary Ar36 beam on a Be9 target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The Ar33 beam hit a secondary Au197 target with an energy of approximately 145 MeV/nucleon. An array of high-purity germanium cluster detectors and large-volume BaF2 scintillator detectors were employed for γ-ray spectroscopy at the secondary target position. The Lund-York-Cologne Calorimeter was used to track the outgoing ions and to identify the nuclear reaction channels. For the two lowest energy excited states of Ar33 the reduced transition strengths have been determined. With these first results the Tz=-3/2 nucleus Ar33 is now, together with Na21 (Tz=-1/2), the only neutron-deficient odd-A sd shell nucleus in which experimental transition strengths are available. The experimental values are compared to results of shell-model calculations which describe simultaneously mirror-energy differences and transition-strength values of mirror pairs in the sd shell in a consistent way.

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