Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63

Rudolph, D.; Ragnarsson, I.; Clark, R. M.; Andreoiu, C.; Carpenter, M. P.; Ekman, J.; Fahlander, C.; Kondev, F. G.; Lauritsen, T.; Sarantites, D. G.; Seweryniak, D.; Svensson, C. E.

doi:10.1103/PhysRevC.103.034306

Title: Low-, medium-, and high-spin states in the $N = Z + 1$ nucleus ${}^{63}{Ga}$

Abstract

The fusion-evaporation reaction Si-28 + Ca-40 at 122 MeV beam energy was used to populate excited states in the N = Z + 1 nucleus Ga-63. With the combination of the Gammasphere spectrometer and the Microball CsI(T1) charged-particle detector array, the level scheme of Ga-63 was extended by more than a factor of two in terms of number of gamma-ray transitions and excited states, excitation energy (E-x > 30 MeV), and angular momentum (I > 30 h). Nine regular sequences of states were newly established in the high-spin part of the level scheme. The majority of these rotational band structures could be connected to the previously known part of the level scheme by high-energy gamma-ray transitions in the energy range E-gamma = 4-6 MeV. Low-spin states were assessed by shell-model calculations. The high-spin rotational bands were interpreted and classified by means of cranked Nilsson-Strutinsky calculations.

Authors:

;

; Clark, R. M.;

; Carpenter, M. P.; Ekman, J.; Fahlander, C.;

;

; Sarantites, D. G.; Seweryniak, D.; Svensson, C. E.

Publication Date:: Fri Mar 05 00:00:00 EST 2021

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Org.:: Swedish Research Council (SRC); USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1769457

Alternate Identifier(s):: OSTI ID: 1777454; OSTI ID: 1780752

Grant/Contract Number:: AC02-06CH11357; AC02-05CH11231; FG05-88ER-40406; VR 2016-3969; FG05-88ER40406

Resource Type:: Published Article

Journal Name:: Physical Review C

Additional Journal Information:: Journal Name: Physical Review C Journal Volume: 103 Journal Issue: 3; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; collective models; electromagnetic transitions; nuclear spin & parity; nuclear structure & decays; shell model; nuclear data analysis & compliation

Citation Formats


                    Rudolph, D., Ragnarsson, I., Clark, R. M., Andreoiu, C., Carpenter, M. P., Ekman, J., Fahlander, C., Kondev, F. G., Lauritsen, T., Sarantites, D. G., Seweryniak, D., and Svensson, C. E. Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63.  United States: N. p., 2021. 
Web.  doi:10.1103/PhysRevC.103.034306.

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                    Rudolph, D., Ragnarsson, I., Clark, R. M., Andreoiu, C., Carpenter, M. P., Ekman, J., Fahlander, C., Kondev, F. G., Lauritsen, T., Sarantites, D. G., Seweryniak, D., & Svensson, C. E. Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63.  United States.  https://doi.org/10.1103/PhysRevC.103.034306

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                    Rudolph, D., Ragnarsson, I., Clark, R. M., Andreoiu, C., Carpenter, M. P., Ekman, J., Fahlander, C., Kondev, F. G., Lauritsen, T., Sarantites, D. G., Seweryniak, D., and Svensson, C. E. Fri .  
"Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63".  United States.  https://doi.org/10.1103/PhysRevC.103.034306.

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@article{osti_1769457,

  title        = {Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63},

  author       = {Rudolph, D. and Ragnarsson, I. and Clark, R. M. and Andreoiu, C. and Carpenter, M. P. and Ekman, J. and Fahlander, C. and Kondev, F. G. and Lauritsen, T. and Sarantites, D. G. and Seweryniak, D. and Svensson, C. E.},

  abstractNote = {The fusion-evaporation reaction Si-28 + Ca-40 at 122 MeV beam energy was used to populate excited states in the N = Z + 1 nucleus Ga-63. With the combination of the Gammasphere spectrometer and the Microball CsI(T1) charged-particle detector array, the level scheme of Ga-63 was extended by more than a factor of two in terms of number of gamma-ray transitions and excited states, excitation energy (E-x > 30 MeV), and angular momentum (I > 30 h). Nine regular sequences of states were newly established in the high-spin part of the level scheme. The majority of these rotational band structures could be connected to the previously known part of the level scheme by high-energy gamma-ray transitions in the energy range E-gamma = 4-6 MeV. Low-spin states were assessed by shell-model calculations. The high-spin rotational bands were interpreted and classified by means of cranked Nilsson-Strutinsky calculations.},

  doi          = {10.1103/PhysRevC.103.034306},

  journal      = {Physical Review C},

  number       = 3,

  volume       = 103,

  place        = {United States},

  year         = {Fri Mar 05 00:00:00 EST 2021},

  month        = {Fri Mar 05 00:00:00 EST 2021}

}

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Title: Low-, medium-, and high-spin states in the N = Z + 1 nucleus Ga 63

Abstract

Citation Formats

A smoothly terminating rotational band in Zn journal, March 1998

Rotational Bands in the Doubly Magic Nucleus N 56 i journal, May 1999

Decay Out of the Doubly Magic Superdeformed Band in the N = Z Nucleus Z 60 n journal, April 1999

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Multiparticle-hole states of high spin in N < 50, A ≈ 90 nuclei: 4. Systematics of level energies and electromagnetic properties journal, January 1996

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Evidence for shape coexistence in the N=Z nucleus 7236Kr36 journal, August 1987

Comprehensive γ -ray spectroscopy of rotational bands in the N = Z + 1 nucleus Zn 61 journal, February 2009

High-spin states and shape evolution in 70,72 Se journal, July 1989

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Shape coexistence and shape transition in nuclei from krypton to molybdenum journal, August 1996

Thorough γ -ray and particle decay investigations of Ni 58 journal, July 2009

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Calculating the nuclear mass in the very high angular momentum regime journal, July 2006

Onset of high-spin rotational bands in the N = Z nucleus Ga 62 journal, July 2020

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Evolution of Collectivity in Kr 72 : Evidence for Rapid Shape Transition journal, April 2014

High-spin spectroscopy of 63 31Ga32 and 65 31Ga34 journal, July 2001

Termination of rotational bands: disappearance of quantum many-body collectivity journal, December 1999

Microscopic study of the high-spin behaviour in selected A ≃ 80 nuclei journal, March 1985

Smooth Termination of Rotational Bands in Z 62 n : Evidence for a Loss of Collectivity journal, March 1998

Ni 58 : An Unpaired Band Crossing at New Heights of Angular Momentum for Rotating Nuclei journal, March 2006

Extensive γ -ray spectroscopy of normally and superdeformed structures in 61 29Cu32 journal, June 2008

Generator-coordinate method for triaxial quadrupole dynamics in Sr isotopes (II). Results for particle-number-projected states journal, August 1993

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Shell model study of the isobaric chains A=50, A=51 and A=52 journal, November 2001

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Title: Low-, medium-, and high-spin states in the $N = Z + 1$ nucleus ${}^{63}{Ga}$

A smoothly terminating rotational band in Zn
journal, March 1998

Rotational Bands in the Doubly Magic Nucleus ${}^{56}N i$
journal, May 1999

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journal, April 1999

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journal, November 2004

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journal, January 1996

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journal, June 2003

Extensive $γ$ -ray spectroscopy of band structures in $_{30}^{62}$ Zn $_{32}$
journal, September 2012

Evidence for shape coexistence in the N=Z nucleus 7236Kr36
journal, August 1987

Comprehensive $γ$ -ray spectroscopy of rotational bands in the $N = Z + 1$ nucleus ${}^{61}{Zn}$
journal, February 2009

High-spin states and shape evolution in ^70,72 Se
journal, July 1989

“The microball” Design, instrumentation and response characteristics of a 4π-multidetector exit channel-selection device for spectroscopic and reaction mechanism studies with Gammasphere
journal, November 1996

New effective interactions for the 0f1p shell
journal, February 1991

Shape coexistence and shape transition in nuclei from krypton to molybdenum
journal, August 1996

Thorough $γ$ -ray and particle decay investigations of ${}^{58}{Ni}$
journal, July 2009

Identification of the π $g_{9 / 2}$ band in ${}^{67}{As}$
journal, October 1990

Lifetime measurements in70Se and72Se
journal, March 1986

Identification of excited states in Ga316130: Mirror nuclei in the upper fp shell
journal, January 2005

Prompt Proton Decay of a Well-Deformed Rotational Band in $^{58} Cu$
journal, April 1998

The shell model as a unified view of nuclear structure
journal, June 2005

Search for enhanced octupole correlations in ${}^{65}{Ge}$
journal, October 1995

The GAMMASPHERE
journal, December 1990

Comparative study of rotational bands in the $A \approx 60$ mass region: Modification of Nilsson parameters
journal, February 2014

Coulomb energy differences between high-spin states in isobaric multiplets
journal, October 2007

In-beam γ-ray spectroscopy of the N = Z +1 nucleus ${}^{63}{Ga}$
journal, May 1991

Evolution of shapes in 59Cu
journal, July 2002

Nuclear mean-square charge radii of $^{63, 64, 66, 68 - 82}$ Ga nuclei: No anomalous behavior at $N = 32$
journal, September 2012

The 3701 keV neutron g 9/2 single-particle state in 57Ni
journal, December 1999

Calculating the nuclear mass in the very high angular momentum regime
journal, July 2006

Onset of high-spin rotational bands in the $N = Z$ nucleus ${}^{62}{Ga}$
journal, July 2020

Simulated response characteristics of Gammasphere
journal, December 1996

Effective interaction for $pf$ -shell nuclei
journal, May 2002

Rotational bands and particle-hole excitations at very high spin
journal, March 1985

Evolution of Collectivity in ${}^{72}{Kr}$ : Evidence for Rapid Shape Transition
journal, April 2014

High-spin spectroscopy of 63 31Ga32 and 65 31Ga34
journal, July 2001

Termination of rotational bands: disappearance of quantum many-body collectivity
journal, December 1999

Microscopic study of the high-spin behaviour in selected A ≃ 80 nuclei
journal, March 1985

Smooth Termination of Rotational Bands in ${}^{62}Z n$ : Evidence for a Loss of Collectivity
journal, March 1998

${}^{58}{Ni}$ : An Unpaired Band Crossing at New Heights of Angular Momentum for Rotating Nuclei
journal, March 2006

Extensive γ -ray spectroscopy of normally and superdeformed structures in 61 29Cu32
journal, June 2008

Generator-coordinate method for triaxial quadrupole dynamics in Sr isotopes (II). Results for particle-number-projected states
journal, August 1993

MIRROR SYMMETRY IN THE UPPER fp SHELL
journal, December 2005

Shell model study of the isobaric chains A=50, A=51 and A=52
journal, November 2001

Nuclear liquid-drop model and surface-curvature effects
journal, April 2003

Channel selection for high spin γ-ray spectroscopy studies via total energy measurements in fusion-evaporation reactions
journal, September 1997

ESCL8R and LEVIT8R: Software for interactive graphical analysis of HPGe coincidence data sets
journal, July 1995

Nuclear Data Sheets for A = 63
journal, January 2001

Characterization of superdeformed bands in ${}^{62}{Zn}$
journal, November 2009

Mass measurement and spectroscopy of57Cu with the58Ni(14N,15C)-reaction
journal, June 1987

Triaxiality and isospin-forbidden E1 decays in the N = Z nucleus 64Ge
journal, December 1991

New effective interaction for $f_{5} {pg}_{9}$ -shell nuclei
journal, December 2009

Comparative study of superdeformed and highly deformed bands in the $A \sim 60$ mass region
journal, June 1999