First candidates for $γ$ vibrational bands built on the [505]11/2- neutron orbital in odd-A Dy isotopes

Majola, S. N.  T.; Sithole, M. A.; Mdletshe, L.; Hartley, D.; Timár, J.; Nyakó, B. M.; Allmond, James M.; Bark, R. A.; Beausang, C.; Bianco, L.; Bucher, T. D.; Bvumbi, S. P.; Carpenter, M. P.; Chiara, C. J.; Cooper, N.; Cullen, D. M.; Curien, D.; Dinoko, T. S.; Gall, B. J.  P.; Garrett, P. E.; Greenlees, P. T.; Hirvonen, J.; Jakobsson, U.; Jones, P. M.; Julin, R.; Juutinen, S.; Ketelhut, S.; Kheswa, B. V.; Kondev, F. G.; Korichi, A.; Kulp, W. D.; Lauritsen, T.; Lawrie, E. A.; Makhathini, L.; Masiteng, P. L.; Maqabuka, B.; McCutchan, Elizabeth A.; Miller, D.; Miller, S.; Minkova, A.; Msebi, L.; Mthembu, S. H.; Ndayishimye, J.; Nieminen, P.; Ngcobo, P. Z.; Ntshangase, S. S.; Orce, J. N.; Peura, P.; Rahkila, P.; Redon, N.; Riedinger, L. L.; Riley, M. A.; Roux, D. G.; Ruotsalainen, P.; Piot, J.; Saren, J.; Sharpey-Schafer, J. F.; Scholey, C.; Shirinda, O.; Simpson, J.; Sorri, J.; Stefanescu, I.; Stolze, S.; Uusitalo, J.; Wang, X.; Werner, V.; Wood, J. L.; Yu, C.-H.; Zhu, S.; Zimba, G.

doi:10.1103/PhysRevC.101.044312

Title: First candidates for $$γ$$ vibrational bands built on the $[505] 11 / 2^{-}$ neutron orbital in odd- $A$ Dy isotopes

Abstract

In this work, rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the ${}_{155}{Gd} (α, 2 n) {}_{157}{Dy}$ and ${}_{148}{Nd} ({}_{12}C, 5 n) {}_{155}{Dy}$ reactions at 25 and 65 MeV, respectively. We report high- $K$ bands, which are conjectured to be the first candidates of a $K^{π} = 2^{+} γ$ vibrational band, built on the $[505] 11 / 2^{-}$ neutron orbital, in both odd- $A {}_{155, 157}{Dy}$ isotopes. The coupling of the first excited $K = 0^{+}$ states or the so-called β vibrational bands at 661 and 676 keV in ${}_{154}{Dy}$ and ${}_{156}{Dy}$ to the $[505] 11 / 2^{-}$ orbital, to produce a $K^{π} = 11 / 2^{-}$ band, was not observed in both ${}_{155}{Dy}$ and ${}_{157}{Dy}$ , respectively. The implication of these findings on the interpretation of the first excited $0^{+}$ states in the core nuclei ${}_{154}{Dy}$ and ${}_{156}{Dy}$ are also discussed.

Authors:

^[1]; Sithole, M. A. ^[2]; Mdletshe, L. ^[3]; Hartley, D. ^[4]; Timár, J. ^[5]; Nyakó, B. M. ^[5];

^[6]; Bark, R. A. ^[7]; Beausang, C. ^[8]; Bianco, L. ^[9]; Bucher, T. D. ^[10]; Bvumbi, S. P. ^[11]; Carpenter, M. P. ^[12]; Chiara, C. J. ^[12]; Cooper, N. ^[13]; Cullen, D. M. ^[14]; Curien, D. ^[15]; Dinoko, T. S. ^[16]; Gall, B. J. P. ^[15]; Garrett, P. E. ^[9] more »

Univ. of Johannesburg, Auckland Park (South Africa); Univ. of Zululand,kwaDlangezwa (South Africa); iThemba LABS, Somerset--West (South Africa)
iThemba LABS, Somerset--West (South Africa); Univ. of the Western Cape, Bellville (South Africa)
Univ. of Zululand,kwaDlangezwa (South Africa); iThemba LABS, Somerset--West (South Africa)
US Naval Academy, Annapolis, MD (United States)
MTA Atomki, Debrecen (Hungary)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
iThemba LABS, Somerset--West (South Africa)
Univ. of Richmond, VA (United States)
Univ. of Guelph, ON (Canada)
iThemba LABS, Somerset--West (South Africa); Stellenbosch Univ., Matieland (South Africa)
National Radioactive Waste Disposal Inst. (NRWDI), Pelendaba (South Africa); The South African Nuclear Energy Corporation SOC Limited (Necsa), Pelendaba (South Africa)
Argonne National Lab. (ANL), Argonne, IL (United States)
Yale Univ., New Haven, CT (United States). Wright Nuclear Structure Lab.
Univ. of Jyvaskyla (Finland); Univ. of Manchester (United Kingdom)
Univ. de Strasbourg (France)
National Metrology Inst. of South Africa, Pretoria (South Africa)
Univ. of Jyvaskyla (Finland)
Univ. of Johannesburg, Auckland Park (South Africa); iThemba LABS, Somerset--West (South Africa)
CSNSM–IN2P3–CNRS, Orsay Campus (France)
Georgia Inst. of Technology, Atlanta, GA (United States)
Univ. of Johannesburg, Auckland Park (South Africa)
Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Tennessee, Knoxville, TN (United States); TRIUMF, Vancouver, BC (Canada)
Florida State Univ., Tallahassee, FL (United States)
Univ. of Sofia (Bulgaria)
Univ. of Cape Town (South Africa)
Univ. of Zululand,kwaDlangezwa (South Africa)
Univ. of the Western Cape, Bellville (South Africa)
Inst. de Physique Nucléaire Lyon, Villeurbanne (France)
Univ. of Tennessee, Knoxville, TN (United States)
Rhodes Univ., Grahamstown (South Africa)
STFC Daresbury Lab., Daresbury, Warrington (United Kingdom)
Univ. of Oulu, Sodankylä (Finland)
Florida State Univ., Tallahassee, FL (United States); California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States)
Yale Univ., New Haven, CT (United States). Wright Nuclear Structure Lab.; Technische Univ. Darmstadt (Germany)

Publication Date:: Mon Apr 20 00:00:00 EDT 2020

Research Org.:: Brookhaven National Laboratory (BNL), Upton, NY (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Yale Univ., New Haven, CT (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP); National Research Foundation of Korea (NRF); Natural Sciences and Engineering Research Council of Canada (NSERC); German Federal Ministry of Education and Research (BMBF); National Science Foundation (NSF); GAMMAPOOL; Finnish Centre of Excellence Programme 2006–2011; National Research, Development and Innovation Fund of Hungary (NRDI Fund); European Regional Development Fund (ERDF)

OSTI Identifier:: 1616444

Alternate Identifier(s):: OSTI ID: 1615431; OSTI ID: 1630492; OSTI ID: 1631582

Report Number(s):: BNL-214875-2020-JAAM
Journal ID: ISSN 2469-9985; PRVCAN; TRN: US2106453

Grant/Contract Number:: SC0012704; 96829; 109711; 106012; 05P19RDFN1; PHY-1203100; PHY-1502092; PHY–0754674; AC02-06CH11357; FG02-91ER40609; 213503; GINOP–2.3.3–15–2016– 00034; AC05-00OR22725

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 101; Journal Issue: 4; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats


                    Majola, S. N.  T., Sithole, M. A., Mdletshe, L., Hartley, D., Timár, J., Nyakó, B. M., Allmond, James M., Bark, R. A., Beausang, C., Bianco, L., Bucher, T. D., Bvumbi, S. P., Carpenter, M. P., Chiara, C. J., Cooper, N., Cullen, D. M., Curien, D., Dinoko, T. S., Gall, B. J.  P., Garrett, P. E., Greenlees, P. T., Hirvonen, J., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Kondev, F. G., Korichi, A., Kulp, W. D., Lauritsen, T., Lawrie, E. A., Makhathini, L., Masiteng, P. L., Maqabuka, B., McCutchan, Elizabeth A., Miller, D., Miller, S., Minkova, A., Msebi, L., Mthembu, S. H., Ndayishimye, J., Nieminen, P., Ngcobo, P. Z., Ntshangase, S. S., Orce, J. N., Peura, P., Rahkila, P., Redon, N., Riedinger, L. L., Riley, M. A., Roux, D. G., Ruotsalainen, P., Piot, J., Saren, J., Sharpey-Schafer, J. F., Scholey, C., Shirinda, O., Simpson, J., Sorri, J., Stefanescu, I., Stolze, S., Uusitalo, J., Wang, X., Werner, V., Wood, J. L., Yu, C.-H., Zhu, S., and Zimba, G. First candidates for $γ$ vibrational bands built on the [505]11/2- neutron orbital in odd-A Dy isotopes.  United States: N. p., 2020. 
Web.  doi:10.1103/PhysRevC.101.044312.

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                    Majola, S. N.  T., Sithole, M. A., Mdletshe, L., Hartley, D., Timár, J., Nyakó, B. M., Allmond, James M., Bark, R. A., Beausang, C., Bianco, L., Bucher, T. D., Bvumbi, S. P., Carpenter, M. P., Chiara, C. J., Cooper, N., Cullen, D. M., Curien, D., Dinoko, T. S., Gall, B. J.  P., Garrett, P. E., Greenlees, P. T., Hirvonen, J., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Kondev, F. G., Korichi, A., Kulp, W. D., Lauritsen, T., Lawrie, E. A., Makhathini, L., Masiteng, P. L., Maqabuka, B., McCutchan, Elizabeth A., Miller, D., Miller, S., Minkova, A., Msebi, L., Mthembu, S. H., Ndayishimye, J., Nieminen, P., Ngcobo, P. Z., Ntshangase, S. S., Orce, J. N., Peura, P., Rahkila, P., Redon, N., Riedinger, L. L., Riley, M. A., Roux, D. G., Ruotsalainen, P., Piot, J., Saren, J., Sharpey-Schafer, J. F., Scholey, C., Shirinda, O., Simpson, J., Sorri, J., Stefanescu, I., Stolze, S., Uusitalo, J., Wang, X., Werner, V., Wood, J. L., Yu, C.-H., Zhu, S., & Zimba, G. First candidates for $γ$ vibrational bands built on the [505]11/2- neutron orbital in odd-A Dy isotopes.  United States.  https://doi.org/10.1103/PhysRevC.101.044312

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                    Majola, S. N.  T., Sithole, M. A., Mdletshe, L., Hartley, D., Timár, J., Nyakó, B. M., Allmond, James M., Bark, R. A., Beausang, C., Bianco, L., Bucher, T. D., Bvumbi, S. P., Carpenter, M. P., Chiara, C. J., Cooper, N., Cullen, D. M., Curien, D., Dinoko, T. S., Gall, B. J.  P., Garrett, P. E., Greenlees, P. T., Hirvonen, J., Jakobsson, U., Jones, P. M., Julin, R., Juutinen, S., Ketelhut, S., Kheswa, B. V., Kondev, F. G., Korichi, A., Kulp, W. D., Lauritsen, T., Lawrie, E. A., Makhathini, L., Masiteng, P. L., Maqabuka, B., McCutchan, Elizabeth A., Miller, D., Miller, S., Minkova, A., Msebi, L., Mthembu, S. H., Ndayishimye, J., Nieminen, P., Ngcobo, P. Z., Ntshangase, S. S., Orce, J. N., Peura, P., Rahkila, P., Redon, N., Riedinger, L. L., Riley, M. A., Roux, D. G., Ruotsalainen, P., Piot, J., Saren, J., Sharpey-Schafer, J. F., Scholey, C., Shirinda, O., Simpson, J., Sorri, J., Stefanescu, I., Stolze, S., Uusitalo, J., Wang, X., Werner, V., Wood, J. L., Yu, C.-H., Zhu, S., and Zimba, G. Mon .  
"First candidates for $γ$ vibrational bands built on the [505]11/2- neutron orbital in odd-A Dy isotopes".  United States.  https://doi.org/10.1103/PhysRevC.101.044312.  https://www.osti.gov/servlets/purl/1616444.

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@article{osti_1616444,

  title        = {First candidates for $γ$ vibrational bands built on the [505]11/2- neutron orbital in odd-A Dy isotopes},

  author       = {Majola, S. N.  T. and Sithole, M. A. and Mdletshe, L. and Hartley, D. and Timár, J. and Nyakó, B. M. and Allmond, James M. and Bark, R. A. and Beausang, C. and Bianco, L. and Bucher, T. D. and Bvumbi, S. P. and Carpenter, M. P. and Chiara, C. J. and Cooper, N. and Cullen, D. M. and Curien, D. and Dinoko, T. S. and Gall, B. J.  P. and Garrett, P. E. and Greenlees, P. T. and Hirvonen, J. and Jakobsson, U. and Jones, P. M. and Julin, R. and Juutinen, S. and Ketelhut, S. and Kheswa, B. V. and Kondev, F. G. and Korichi, A. and Kulp, W. D. and Lauritsen, T. and Lawrie, E. A. and Makhathini, L. and Masiteng, P. L. and Maqabuka, B. and McCutchan, Elizabeth A. and Miller, D. and Miller, S. and Minkova, A. and Msebi, L. and Mthembu, S. H. and Ndayishimye, J. and Nieminen, P. and Ngcobo, P. Z. and Ntshangase, S. S. and Orce, J. N. and Peura, P. and Rahkila, P. and Redon, N. and Riedinger, L. L. and Riley, M. A. and Roux, D. G. and Ruotsalainen, P. and Piot, J. and Saren, J. and Sharpey-Schafer, J. F. and Scholey, C. and Shirinda, O. and Simpson, J. and Sorri, J. and Stefanescu, I. and Stolze, S. and Uusitalo, J. and Wang, X. and Werner, V. and Wood, J. L. and Yu, C.-H. and Zhu, S. and Zimba, G.},

  abstractNote = {In this work, rotational structures have been measured using the Jurogam II and GAMMASPHERE arrays at low spin following the Gd155(α,2n)Dy157 and Nd148(C12,5n)Dy155 reactions at 25 and 65 MeV, respectively. We report high-K bands, which are conjectured to be the first candidates of a Kπ=2+γ vibrational band, built on the [505]11/2- neutron orbital, in both odd-ADy155,157 isotopes. The coupling of the first excited K=0+ states or the so-called β vibrational bands at 661 and 676 keV in Dy154 and Dy156 to the [505]11/2- orbital, to produce a Kπ=11/2- band, was not observed in both Dy155 and Dy157, respectively. The implication of these findings on the interpretation of the first excited 0+ states in the core nuclei Dy154 and Dy156 are also discussed.},

  doi          = {10.1103/PhysRevC.101.044312},

  journal      = {Physical Review C},

  number       = 4,

  volume       = 101,

  place        = {United States},

  year         = {Mon Apr 20 00:00:00 EDT 2020},

  month        = {Mon Apr 20 00:00:00 EDT 2020}

}

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Title: First candidates for $$γ$$ vibrational bands built on the [ 505 ] 11 / 2- neutron orbital in odd- A Dy isotopes

Abstract

Citation Formats

High-spin rotational states in 157Dy journal, January 1973

Spin ∼60 ℏ in 156Dy: competition between collective and terminating structures at very high-spin journal, October 1998

Quasiparticle spectra near the yrast line journal, September 1979

Studies of positive-parity low-spin states in the A = 150 region journal, January 2018

Nuclear Data Sheets for journal, July 2005

The Clover: a new generation of composite Ge detectors journal, August 1999

Measurements on prototype Ge and BGO detectors for the Eurogam array journal, March 1992

Signatures of γ softness or triaxiality in low energy nuclear spectra journal, May 1991

Blocking of coupling to the 02 + excitation in 154Gd by the [505]11/2- neutron in 155Gd journal, January 2011

Congruent band structures in 154Gd : Configuration-dependent pairing, a double vacuum and lack of $ \beta$ -vibrations journal, January 2011

The nature of M1 admixtures in intra-band transitions in the γ-vibrational band journal, August 1980

Multiple excitation modes in Hf 163 journal, November 2014

Pairing isomers journal, June 1976

Quasiparticle and γ -band structures in Dy 156 journal, January 2018

Low-Energy Coexisting Band in G d 154 journal, September 2003

Determination of the Level Structure of Even-Even 156Gd by Using the 154Sm(��,2n��) Reaction journal, November 2003

“Stiff” deformed nuclei, configuration dependent pairing and the $\beta$ β and $\gamma$ γ degrees of freedom journal, February 2019

An interpretation of backbending in terms of the crossing of the ground state band with an aligned two-quasiparticle band journal, January 1979

A double vacuum, configuration dependent pairing and lack of β-vibrations in transitional nuclei: Band structure of N = 88 to N = 91 Nuclei journal, March 2010

Nuclear Data Sheets for A=158 journal, March 2004

Structure changes in Er 160 from low to ultrahigh spin journal, April 2011

Yrare low-spin positive-parity states in N = 88 66 154 Dy journal, April 2018

β and γ bands in N = 88 , 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory: Vibrations, shape coexistence, and superdeformation journal, October 2019

Collective γ-vibrational bands in 165Ho and 167Er journal, October 1997

Rotational band structures in N = 89 153 Gd journal, December 2002

Non-yrast positive-parity structures in the γ -soft nucleus Er 156 journal, April 2011

Configuration dependent pairing from band crossing frequencies journal, December 1982

Triaxial rotor model description of E 2 properties in Os 186 , 188 , 190 , 192 journal, July 2008

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

Calibration of the new composite “clover” detector as a Compton polarimeter for the EUROGAM array journal, August 1995

Observation of γ vibrations and alignments built on non-ground-state configurations in Dy 156 journal, March 2015

Identification of the γ -vibrational band built on the 11 / 2 − [ 505 ] orbital in 165 Er journal, September 2011

Spectroscopy of low-spin states in Dy 157 : Search for evidence of enhanced octupole correlations journal, September 2019

Use of DCO ratios for spin determination in γ-γ coincidence measurements journal, February 1989

Rotational alignment of the h11/2 band in 157Dy journal, November 2002

Investigation of negative-parity states in Dy 156 : Search for evidence of tetrahedral symmetry journal, January 2017

Multipole mixing parameters of γ-transitions between the γ-vibrational band and the ground state rotational band of 168Er and F-spin violation journal, June 1998

New collective structures in the 163Yb nucleus journal, October 2019

Structural behavior of Dy 157 , 158 , 159 in the I = 30 − 50 ℏ spin regime journal, December 2005

Identification of a pairing isomeric band in Sm 152 journal, April 2005

Triaxial rotor model for nuclei with independent inertia and electric quadrupole tensors journal, August 2004

High-spin structure of 155Dy journal, November 1994

Construction and use of a three Ge(Li) Compton polarimeter journal, May 1973

Backbending region study in 1 6 0 , 1 6 2 Dy using incomplete fusion reactions journal, July 2002

Yrast band spectroscopy of155Gd and157Dy journal, March 1993

Low-lying positive parity bands in 162Yb journal, October 2018

Title: First candidates for $$γ$$ vibrational bands built on the $[505] 11 / 2^{-}$ neutron orbital in odd- $A$ Dy isotopes

High-spin rotational states in 157Dy
journal, January 1973

Spin ∼60 ℏ in 156Dy: competition between collective and terminating structures at very high-spin
journal, October 1998

Quasiparticle spectra near the yrast line
journal, September 1979

Studies of positive-parity low-spin states in the A = 150 region
journal, January 2018

Nuclear Data Sheets for
journal, July 2005

The Clover: a new generation of composite Ge detectors
journal, August 1999

Measurements on prototype Ge and BGO detectors for the Eurogam array
journal, March 1992

Signatures of γ softness or triaxiality in low energy nuclear spectra
journal, May 1991

Blocking of coupling to the 02 + excitation in 154Gd by the [505]11/2- neutron in 155Gd
journal, January 2011

Congruent band structures in 154Gd : Configuration-dependent pairing, a double vacuum and lack of $ \beta$ -vibrations
journal, January 2011

The nature of M1 admixtures in intra-band transitions in the γ-vibrational band
journal, August 1980

Multiple excitation modes in ${}^{163}{Hf}$
journal, November 2014

Pairing isomers
journal, June 1976

Quasiparticle and $γ$ -band structures in ${}^{156}{Dy}$
journal, January 2018

Low-Energy Coexisting Band in ${}^{154}{G d}$
journal, September 2003

Determination of the Level Structure of Even-Even 156Gd by Using the 154Sm(��,2n��) Reaction
journal, November 2003

“Stiff” deformed nuclei, configuration dependent pairing and the $\beta$ β and $\gamma$ γ degrees of freedom
journal, February 2019

An interpretation of backbending in terms of the crossing of the ground state band with an aligned two-quasiparticle band
journal, January 1979

A double vacuum, configuration dependent pairing and lack of β-vibrations in transitional nuclei: Band structure of N = 88 to N = 91 Nuclei
journal, March 2010

Nuclear Data Sheets for A=158
journal, March 2004

Structure changes in ${}^{160}{Er}$ from low to ultrahigh spin
journal, April 2011

Yrare low-spin positive-parity states in N = 88 66 154 Dy
journal, April 2018

$β$ and $γ$ bands in $N = 88$ , 90, and 92 isotones investigated with a five-dimensional collective Hamiltonian based on covariant density functional theory: Vibrations, shape coexistence, and superdeformation
journal, October 2019

Collective γ-vibrational bands in 165Ho and 167Er
journal, October 1997

Rotational band structures in $N = 89^{153} Gd$
journal, December 2002

Non-yrast positive-parity structures in the $γ$ -soft nucleus ${}^{156}{Er}$
journal, April 2011

Configuration dependent pairing from band crossing frequencies
journal, December 1982

Triaxial rotor model description of $E 2$ properties in ${}^{186, 188, 190, 192}{Os}$
journal, July 2008

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

Calibration of the new composite “clover” detector as a Compton polarimeter for the EUROGAM array
journal, August 1995

Observation of γ vibrations and alignments built on non-ground-state configurations in ${}^{156}{Dy}$
journal, March 2015

Identification of the $γ$ -vibrational band built on the $11 / 2^{-} [505]$ orbital in $^{165}$ Er
journal, September 2011

Spectroscopy of low-spin states in ${}^{157}{Dy}$ : Search for evidence of enhanced octupole correlations
journal, September 2019

Use of DCO ratios for spin determination in γ-γ coincidence measurements
journal, February 1989

Rotational alignment of the h11/2 band in 157Dy
journal, November 2002

Investigation of negative-parity states in ${}^{156}{Dy}$ : Search for evidence of tetrahedral symmetry
journal, January 2017

Multipole mixing parameters of γ-transitions between the γ-vibrational band and the ground state rotational band of 168Er and F-spin violation
journal, June 1998

New collective structures in the 163Yb nucleus
journal, October 2019

Structural behavior of ${}^{157, 158, 159}{Dy}$ in the $I = 30 − 50 ℏ$ spin regime
journal, December 2005

Identification of a pairing isomeric band in ${}^{152}{Sm}$
journal, April 2005

Triaxial rotor model for nuclei with independent inertia and electric quadrupole tensors
journal, August 2004

High-spin structure of 155Dy
journal, November 1994

Construction and use of a three Ge(Li) Compton polarimeter
journal, May 1973

Backbending region study in $^{160, 162} Dy$ using incomplete fusion reactions
journal, July 2002

Yrast band spectroscopy of155Gd and157Dy
journal, March 1993

Low-lying positive parity bands in 162Yb
journal, October 2018