Electric and magnetic dipole strength in 66Zn

R. Schwengner; R. Massarczyk; M. Scheck; W. Tornow; G. Battaglia; T. Beck; D. Bemmerer; N. Benouaret; R. Beyer; M. Butterling; F. Fiedler; S. W. Finch; C. Fransen; U. Friman-Gayer; A. Frotscher; R. Gonzalez; M. Grieger; A. Hartmann; T. Hensel; E. Hoemann; H. Hoffmann; R. V.F. Janssens; S. Johnson; M. D. Jones; A. R. Junghans; N. Kelly; J. Kleemann; null Krishichayan; D. R. Little; F. Ludwig; S. E. Müller; D. O'Donnell; O. Papst; E. Pirovano; J. Sinclair; M. P. Takács; S. Turkat; S. Urlaß; A. Wagner; V. Werner; O. Wieland; J. Wilhelmy

doi:10.1103/PhysRevC.103.024312

Electric and magnetic dipole strength in ⁶⁶Zn

R. Schwengner, R. Massarczyk, M. Scheck, W. Tornow, G. Battaglia, T. Beck, D. Bemmerer, N. Benouaret, R. Beyer, M. Butterling, F. Fiedler, S. W. Finch, C. Fransen, U. Friman-Gayer, A. Frotscher, R. Gonzalez, M. Grieger, A. Hartmann, T. Hensel, E. HoemannH. Hoffmann, R. V.F. Janssens, S. Johnson, M. D. Jones, A. R. Junghans, N. Kelly, J. Kleemann, Krishichayan, D. R. Little, F. Ludwig, S. E. Müller, D. O'Donnell, O. Papst, E. Pirovano, J. Sinclair, M. P. Takács, S. Turkat, S. Urlaß, A. Wagner, V. Werner, O. Wieland, J. Wilhelmy

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

6 Citations (Scopus)

30 Downloads (Pure)

Abstract

The dipole strength of the nuclide ⁶⁶Zn was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.4 MeV at the γELBE facility as well as using quasimonoenergetic and linearly polarized photon beams of 30 energies within the range of 4.3 to 9.9 MeV at the HIγS facility. A total of 128 J=1 states were identified, among them 9 with 1+ and 86 with 1- assignments. The quasicontinuum of unresolved transitions was included in the analysis of the spectra and the intensities of branching transitions were estimated on the basis of simulations of statistical γ-ray cascades. As a result, the photoabsorption cross section up to the neutron-separation energy was determined and compared with predictions of the statistical reaction model. The experimental M1 strengths from resolved 1+ states are compared with results of large-scale shell-model calculations.

Original language	English
Article number	024312
Number of pages	14
Journal	Physical Review C
Volume	103
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.103.024312
Publication status	Published - 11 Feb 2021

Funding

We thank the operating crews of the ELBE accelerator and of the TUNL storage ring and FEL for their cooperation and we thank J. Isaak and D. Savran for their help in setting up the experiment at . Special thanks are due to B. A. Brown for his support in using the code NuShellX@MSU . This work was partially supported by the US Department of Energy (DOE), Office of Nuclear Physics, under Grants No. DE-FG02-97ER41033 (TUNL) and No. DE-FG02-97ER41041 (UNC). R.M. acknowledges support by the US Department of Energy, Office of Science, Office of Nuclear Physics under Grant No. LANLEM77. The UWS group acknowledges financial support from UK STFC (Grant No. ST/P005101/1). J.S. acknowledges financial support by the UK Nuclear Data Network. T.B. and V.W. acknowledge support by the BMBF Grant No. 05P18RDEN9 and J. W. acknowledges support by the BMBF Grant No. 05P18PKEN9. T.B., U.F., J.K., and O.P. are supported by the Deutsche Forschungsgemeinschaft under Grant No. SFB 1245 (Project ID 279384907). This work was also supported by the grant “Nuclear Photonics” within the LOEWE program of the State of Hesse. R.S. gratefully acknowledges the allocation of computing time through the Centers for High-Performance Computing of Technische Universität Dresden and of Helmholtz-Zentrum Dresden-Rossendorf.

Keywords

dipole strength
66 Zn
photon-scattering experiments
bremsstrahlung
electron beams
quasicontinuum
unresolved transitions
spectra
branching transitions
statistical reaction model

Access to Document

10.1103/PhysRevC.103.024312Licence: CC BY 4.0

Schwengner-etal-PRC-2021-Electric-and-magnetic-dipole-strength-in-66-ZnFinal published version, 873 KBLicence: CC BY 4.0

Cite this

Schwengner, R., Massarczyk, R., Scheck, M., Tornow, W., Battaglia, G., Beck, T., Bemmerer, D., Benouaret, N., Beyer, R., Butterling, M., Fiedler, F., Finch, S. W., Fransen, C., Friman-Gayer, U., Frotscher, A., Gonzalez, R., Grieger, M., Hartmann, A., Hensel, T., ... Wilhelmy, J. (2021). Electric and magnetic dipole strength in ⁶⁶Zn. Physical Review C, 103(2), Article 024312. https://doi.org/10.1103/PhysRevC.103.024312

@article{71c6550e0ba842e5a5b57b4a0ee8e1f2,

title = "Electric and magnetic dipole strength in 66Zn",

abstract = "The dipole strength of the nuclide 66Zn was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.4 MeV at the γELBE facility as well as using quasimonoenergetic and linearly polarized photon beams of 30 energies within the range of 4.3 to 9.9 MeV at the HIγS facility. A total of 128 J=1 states were identified, among them 9 with 1+ and 86 with 1- assignments. The quasicontinuum of unresolved transitions was included in the analysis of the spectra and the intensities of branching transitions were estimated on the basis of simulations of statistical γ-ray cascades. As a result, the photoabsorption cross section up to the neutron-separation energy was determined and compared with predictions of the statistical reaction model. The experimental M1 strengths from resolved 1+ states are compared with results of large-scale shell-model calculations.",

keywords = "dipole strength, 66 Zn, photon-scattering experiments, bremsstrahlung, electron beams, quasicontinuum, unresolved transitions, spectra, branching transitions, statistical reaction model",

author = "R. Schwengner and R. Massarczyk and M. Scheck and W. Tornow and G. Battaglia and T. Beck and D. Bemmerer and N. Benouaret and R. Beyer and M. Butterling and F. Fiedler and Finch, {S. W.} and C. Fransen and U. Friman-Gayer and A. Frotscher and R. Gonzalez and M. Grieger and A. Hartmann and T. Hensel and E. Hoemann and H. Hoffmann and Janssens, {R. V.F.} and S. Johnson and Jones, {M. D.} and Junghans, {A. R.} and N. Kelly and J. Kleemann and Krishichayan and Little, {D. R.} and F. Ludwig and M{\"u}ller, {S. E.} and D. O'Donnell and O. Papst and E. Pirovano and J. Sinclair and Tak{\'a}cs, {M. P.} and S. Turkat and S. Urla{\ss} and A. Wagner and V. Werner and O. Wieland and J. Wilhelmy",

year = "2021",

month = feb,

day = "11",

doi = "10.1103/PhysRevC.103.024312",

language = "English",

volume = "103",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

}

Schwengner, R, Massarczyk, R, Scheck, M, Tornow, W, Battaglia, G, Beck, T, Bemmerer, D, Benouaret, N, Beyer, R, Butterling, M, Fiedler, F, Finch, SW, Fransen, C, Friman-Gayer, U, Frotscher, A, Gonzalez, R, Grieger, M, Hartmann, A, Hensel, T, Hoemann, E, Hoffmann, H, Janssens, RVF, Johnson, S, Jones, MD, Junghans, AR, Kelly, N, Kleemann, J, Krishichayan, Little, DR, Ludwig, F, Müller, SE, O'Donnell, D, Papst, O, Pirovano, E, Sinclair, J, Takács, MP, Turkat, S, Urlaß, S, Wagner, A, Werner, V, Wieland, O & Wilhelmy, J 2021, 'Electric and magnetic dipole strength in ⁶⁶Zn', Physical Review C, vol. 103, no. 2, 024312. https://doi.org/10.1103/PhysRevC.103.024312

TY - JOUR

T1 - Electric and magnetic dipole strength in 66Zn

AU - Schwengner, R.

AU - Massarczyk, R.

AU - Scheck, M.

AU - Tornow, W.

AU - Battaglia, G.

AU - Beck, T.

AU - Bemmerer, D.

AU - Benouaret, N.

AU - Beyer, R.

AU - Butterling, M.

AU - Fiedler, F.

AU - Finch, S. W.

AU - Fransen, C.

AU - Friman-Gayer, U.

AU - Frotscher, A.

AU - Gonzalez, R.

AU - Grieger, M.

AU - Hartmann, A.

AU - Hensel, T.

AU - Hoemann, E.

AU - Hoffmann, H.

AU - Janssens, R. V.F.

AU - Johnson, S.

AU - Jones, M. D.

AU - Junghans, A. R.

AU - Kelly, N.

AU - Kleemann, J.

AU - Krishichayan, null

AU - Little, D. R.

AU - Ludwig, F.

AU - Müller, S. E.

AU - O'Donnell, D.

AU - Papst, O.

AU - Pirovano, E.

AU - Sinclair, J.

AU - Takács, M. P.

AU - Turkat, S.

AU - Urlaß, S.

AU - Wagner, A.

AU - Werner, V.

AU - Wieland, O.

AU - Wilhelmy, J.

PY - 2021/2/11

Y1 - 2021/2/11

N2 - The dipole strength of the nuclide 66Zn was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.4 MeV at the γELBE facility as well as using quasimonoenergetic and linearly polarized photon beams of 30 energies within the range of 4.3 to 9.9 MeV at the HIγS facility. A total of 128 J=1 states were identified, among them 9 with 1+ and 86 with 1- assignments. The quasicontinuum of unresolved transitions was included in the analysis of the spectra and the intensities of branching transitions were estimated on the basis of simulations of statistical γ-ray cascades. As a result, the photoabsorption cross section up to the neutron-separation energy was determined and compared with predictions of the statistical reaction model. The experimental M1 strengths from resolved 1+ states are compared with results of large-scale shell-model calculations.

AB - The dipole strength of the nuclide 66Zn was studied in photon-scattering experiments using bremsstrahlung produced with electron beams of energies of 7.5 and 13.4 MeV at the γELBE facility as well as using quasimonoenergetic and linearly polarized photon beams of 30 energies within the range of 4.3 to 9.9 MeV at the HIγS facility. A total of 128 J=1 states were identified, among them 9 with 1+ and 86 with 1- assignments. The quasicontinuum of unresolved transitions was included in the analysis of the spectra and the intensities of branching transitions were estimated on the basis of simulations of statistical γ-ray cascades. As a result, the photoabsorption cross section up to the neutron-separation energy was determined and compared with predictions of the statistical reaction model. The experimental M1 strengths from resolved 1+ states are compared with results of large-scale shell-model calculations.

KW - dipole strength

KW - 66 Zn

KW - photon-scattering experiments

KW - bremsstrahlung

KW - electron beams

KW - quasicontinuum

KW - unresolved transitions

KW - spectra

KW - branching transitions

KW - statistical reaction model

UR - http://www.scopus.com/inward/record.url?scp=85100897923&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.103.024312

DO - 10.1103/PhysRevC.103.024312

M3 - Article

AN - SCOPUS:85100897923

SN - 2469-9985

VL - 103

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024312

ER -