Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

A. Wendt; J. Taprogge; P. Reiter; Pavel 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; Joakim Cederkäll; F. Crespi; A. de la Salle; Douglas DiJulio; P. Doornenbal; K. Geibel; Jnaneswari Gellanki; J. Gerl; J. Grȩbosz; 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; Dirk Rudolph; L. Scruton; B. Siebeck; N. Warr; O. Wieland; H. J. Wollersheim

doi:10.1103/PhysRevC.90.054301

Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

A. Wendt, J. Taprogge, P. Reiter, Pavel 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, Joakim Cederkäll, F. Crespi, A. de la SalleDouglas DiJulio, P. Doornenbal, K. Geibel, Jnaneswari Gellanki, J. Gerl, J. Grȩbosz, 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, Dirk Rudolph, L. Scruton, B. Siebeck, N. Warr, O. Wieland, H. J. Wollersheim

Nuclear physics

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Abstract

Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au 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 33Ar the reduced transition strengths have been
determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (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 language	English
Article number	054301
Number of pages	7
Journal	Physical Review C (Nuclear Physics)
Volume	90
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.90.054301
Publication status	Published - 2014

Subject classification (UKÄ)

Subatomic Physics

Keywords

relativistic projectile fragmentation
gamma-ray spectroscopy
isospin symmetry

Access to Document

10.1103/PhysRevC.90.054301

PhysRevC.90.054301-Wendt-Ar33

http://link.aps.org/doi/10.1103/PhysRevC.90.054301

Cite this

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., ... Wollersheim, H. J. (2014). Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar. Physical Review C (Nuclear Physics), 90(5), [054301]. https://doi.org/10.1103/PhysRevC.90.054301

@article{4fb3d8f128244289b2d835877e36dff0,

title = "Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar",

abstract = "Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au 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 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (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.",

keywords = "relativistic projectile fragmentation, gamma-ray spectroscopy, isospin symmetry",

author = "A. Wendt and J. Taprogge and P. Reiter and Pavel 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 Joakim Cederk{\"a}ll and F. Crespi and {de la Salle}, A. and Douglas DiJulio and P. Doornenbal and K. Geibel and Jnaneswari Gellanki and J. Gerl and J. Grȩbosz 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 Dirk Rudolph and L. Scruton and B. Siebeck and N. Warr and O. Wieland and Wollersheim, {H. J.}",

year = "2014",

doi = "10.1103/PhysRevC.90.054301",

language = "English",

volume = "90",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "5",

}

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, Grȩbosz, 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 33Ar', Physical Review C (Nuclear Physics), vol. 90, no. 5, 054301. https://doi.org/10.1103/PhysRevC.90.054301

TY - JOUR

T1 - Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

AU - Wendt, A.

AU - Taprogge, J.

AU - Reiter, P.

AU - Golubev, Pavel

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, Joakim

AU - Crespi, F.

AU - de la Salle, A.

AU - DiJulio, Douglas

AU - Doornenbal, P.

AU - Geibel, K.

AU - Gellanki, Jnaneswari

AU - Gerl, J.

AU - Grȩbosz, 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, Dirk

AU - Scruton, L.

AU - Siebeck, B.

AU - Warr, N.

AU - Wieland, O.

AU - Wollersheim, H. J.

PY - 2014

Y1 - 2014

N2 - Reduced transition strengths of the deexciting transitions from the first two excited states in 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au 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 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (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 33Ar were measured in a relativistic Coulomb excitation experiment at the GSI Helmholtz center. The radioactive ion beam was produced by fragmentation of a primary 36Ar beam on a 9Be target followed by the selection of the reaction product of interest via the GSI Fragment Separator. The 33Ar beam hit a secondary 197Au 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 33Ar the reduced transition strengths have been determined. With these first results the Tz = −3/2 nucleus 33Ar is now, together with 21Na (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.

KW - relativistic projectile fragmentation

KW - gamma-ray spectroscopy

KW - isospin symmetry

UR - http://doi.org/10.1103/PhysRevC.91.019904

U2 - 10.1103/PhysRevC.90.054301

DO - 10.1103/PhysRevC.90.054301

M3 - Article

VL - 90

JO - Physical Review C

JF - Physical Review C

SN - 2469-9985

IS - 5

M1 - 054301

ER -

Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

Abstract

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The Lund-York-Cologne Calorimeter (LYCCA): Concept, Design and Prototype Developments for a FAIR-NUSTAR Detector System to Discriminate Relativistic Heavy-ion Reaction Products

Nuclear Structure at the Limits: Isotope-selective Spectroscopy

Swedish delegate PRESPEC Steering Committee

Cite this

Isospin Symmetry in the sd Shell: Transition Strengths in the Neutron-deficient sd Shell Nucleus 33Ar

Abstract

Subject classification (UKÄ)

Keywords

Access to Document

Other files and links

Fingerprint

Research output

The Lund-York-Cologne Calorimeter (LYCCA): Concept, Design and Prototype Developments for a FAIR-NUSTAR Detector System to Discriminate Relativistic Heavy-ion Reaction Products

Projects

Nuclear Structure at the Limits: Isotope-selective Spectroscopy

Activities

Swedish delegate PRESPEC Steering Committee

Cite this