First observation of rotational structures in Re168

Hartley, D. J.; Janssens, R. V.  F.; Riedinger, L. L.; Riley, M. A.; Wang, X.; Miller, S. L.; Ayangeakaa, A. D.; Bertone, P. F.; Carpenter, M. P.; Chiara, C. J.; Chowdhury, P.; Garg, U.; Gürdal, G.; Hota, S. S.; Kondev, F. G.; Lauritsen, T.; Ma, W. C.; Matta, J.; McCutchan, E. A.; Mukhopadhyay, S.; Pedicini, E. E.; Vanhoy, J. R.; Zhu, S.

doi:10.1103/PhysRevC.94.054329

Title: First observation of rotational structures in ${}^{168}{Re}$

Abstract

We assigned first rotational sequences to the odd-odd nucleus ¹⁶⁸Re. Coincidence relationships of these structures with rhenium x rays confirm the isotopic assignment, while arguments based on the γ-ray multiplicity (K-fold) distributions observed with the new bands lead to the mass assignment. Configurations for the two bands were determined through analysis of the rotational alignments of the structures and a comparison of the experimental B(M1)/B(E2) ratios with theory. Tentative spin assignments are proposed for the πh_11/2νi_13/2 band, based on energy level systematics for other known sequences in neighboring odd-odd rhenium nuclei, as well as on systematics seen for the signature inversion feature that is well known in this region. Furthermore, the spin assignment for the πh_11/2ν(h_9/2/f_7/2) structure provides additional validation of the proposed spins and configurations for isomers in the ¹⁷⁶Au → ¹⁷²Ir → ¹⁶⁸Re α-decay chain.

Authors:

Hartley, D. J. ^[1]; Janssens, R. V. F. ^[2]; Riedinger, L. L. ^[3]; Riley, M. A. ^[4]; Wang, X. ^[4]; Miller, S. L. ^[4]; Ayangeakaa, A. D. ^[5]; Bertone, P. F. ^[2]; Carpenter, M. P. ^[2]; Chiara, C. J. ^[6]; Chowdhury, P. ^[7]; Garg, U. ^[5]; Gürdal, G. ^[8]; Hota, S. S. ^[7]; Kondev, F. G. ^[8]; Lauritsen, T. ^[2]; Ma, W. C. ^[9]; Matta, J. ^[5]; McCutchan, E. A. ^[2]; Mukhopadhyay, S. ^[5] more »

U.S. Naval Academy, Annapolis, MD (United States). Dept. of Physics
Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
Univ. of Tennessee, Knoxville, TN (United States). Dept. of Physics and Astronomy
Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
Univ. of Notre Dame, IN (United States). Dept. of Physics
Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division, Nuclear Engineering Division; Univ. of Maryland, College Park, MD (United States). Dept. of Chemistry and Biochemistry
Univ. of Massachusetts, Lowell, MA (United States). Dept. of Physics
Argonne National Lab. (ANL), Argonne, IL (United States). Nuclear Engineering Division
Mississippi State Univ., Mississippi State, MS (United States). Dept. of Physics

Publication Date:: Wed Nov 30 00:00:00 EST 2016

Research Org.:: Argonne National Lab. (ANL), Argonne, IL (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP); National Science Foundation (NSF)

OSTI Identifier:: 1390822

Alternate Identifier(s):: OSTI ID: 1333978

Grant/Contract Number:: AC02-06CH11357; FG02-94ER40848; FG02-96ER40983; FG02-95ER40939; FG02-94ER40834; PHY-1203100; PHY-0754674; PHY10-68192

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 94; Journal Issue: 5; 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


                    Hartley, D. J., Janssens, R. V.  F., Riedinger, L. L., Riley, M. A., Wang, X., Miller, S. L., Ayangeakaa, A. D., Bertone, P. F., Carpenter, M. P., Chiara, C. J., Chowdhury, P., Garg, U., Gürdal, G., Hota, S. S., Kondev, F. G., Lauritsen, T., Ma, W. C., Matta, J., McCutchan, E. A., Mukhopadhyay, S., Pedicini, E. E., Vanhoy, J. R., and Zhu, S. First observation of rotational structures in Re168.  United States: N. p., 2016. 
Web.  doi:10.1103/PhysRevC.94.054329.

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                    Hartley, D. J., Janssens, R. V.  F., Riedinger, L. L., Riley, M. A., Wang, X., Miller, S. L., Ayangeakaa, A. D., Bertone, P. F., Carpenter, M. P., Chiara, C. J., Chowdhury, P., Garg, U., Gürdal, G., Hota, S. S., Kondev, F. G., Lauritsen, T., Ma, W. C., Matta, J., McCutchan, E. A., Mukhopadhyay, S., Pedicini, E. E., Vanhoy, J. R., & Zhu, S. First observation of rotational structures in Re168.  United States.  https://doi.org/10.1103/PhysRevC.94.054329

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                    Hartley, D. J., Janssens, R. V.  F., Riedinger, L. L., Riley, M. A., Wang, X., Miller, S. L., Ayangeakaa, A. D., Bertone, P. F., Carpenter, M. P., Chiara, C. J., Chowdhury, P., Garg, U., Gürdal, G., Hota, S. S., Kondev, F. G., Lauritsen, T., Ma, W. C., Matta, J., McCutchan, E. A., Mukhopadhyay, S., Pedicini, E. E., Vanhoy, J. R., and Zhu, S. Wed .  
"First observation of rotational structures in Re168".  United States.  https://doi.org/10.1103/PhysRevC.94.054329.  https://www.osti.gov/servlets/purl/1390822.

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@article{osti_1390822,

  title        = {First observation of rotational structures in Re168},

  author       = {Hartley, D. J. and Janssens, R. V.  F. and Riedinger, L. L. and Riley, M. A. and Wang, X. and Miller, S. L. and Ayangeakaa, A. D. and Bertone, P. F. and Carpenter, M. P. and Chiara, C. J. and Chowdhury, P. and Garg, U. and Gürdal, G. and Hota, S. S. and Kondev, F. G. and Lauritsen, T. and Ma, W. C. and Matta, J. and McCutchan, E. A. and Mukhopadhyay, S. and Pedicini, E. E. and Vanhoy, J. R. and Zhu, S.},

  abstractNote = {We assigned first rotational sequences to the odd-odd nucleus 168Re. Coincidence relationships of these structures with rhenium x rays confirm the isotopic assignment, while arguments based on the γ-ray multiplicity (K-fold) distributions observed with the new bands lead to the mass assignment. Configurations for the two bands were determined through analysis of the rotational alignments of the structures and a comparison of the experimental B(M1)/B(E2) ratios with theory. Tentative spin assignments are proposed for the πh11/2νi13/2 band, based on energy level systematics for other known sequences in neighboring odd-odd rhenium nuclei, as well as on systematics seen for the signature inversion feature that is well known in this region. Furthermore, the spin assignment for the πh11/2ν(h9/2/f7/2) structure provides additional validation of the proposed spins and configurations for isomers in the 176Au → 172Ir → 168Re α-decay chain.},

  doi          = {10.1103/PhysRevC.94.054329},

  journal      = {Physical Review C},

  number       = 5,

  volume       = 94,

  place        = {United States},

  year         = {Wed Nov 30 00:00:00 EST 2016},

  month        = {Wed Nov 30 00:00:00 EST 2016}

}

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Works referenced in this record:

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journal, September 1992

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Title: First observation of rotational structures in Re 168

Abstract

Citation Formats

Revision of the decay data of166?170Re, including new isomers167m,169mRe journal, September 1992

Strongly coupled bands in the neutron-deficient nucleus 167 Re journal, July 2003

Signature inversion — A fingerprint of triaxiality journal, March 1984

Electromagnetic radiation of rotating nuclei journal, September 1987

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

Blue: a database for high-fold γ-ray coincidence data journal, April 2001

New Physics Opportunities at Gammasphere journal, January 1996

Higher Order Corrections to the Cranking Model journal, May 1965

Roles of triaxiality and residual interaction in signature inversions of A ∼ 130 odd-odd nuclei journal, May 1994

Isomerism in neutron-deficient iridium isotopes alpha- and beta-decay studies of 171–175Ir journal, August 1992

Systematic features of signature inversion of ( h 1 1 / 2 ) p ( i 1 3 / 2 ) n bands in doubly odd nuclei around A ∼160 journal, November 1995

High-spin structure of 167W and 168W journal, October 1992

Studies of high-spin states in rare-earth nuclei using angular momentum projection method journal, September 1991

Quadrupole pairing interaction and signature inversion journal, April 2000

Title: First observation of rotational structures in ${}^{168}{Re}$

Revision of the decay data of166?170Re, including new isomers167m,169mRe
journal, September 1992

Strongly coupled bands in the neutron-deficient nucleus $^{167} Re$
journal, July 2003

Signature inversion — A fingerprint of triaxiality
journal, March 1984

Electromagnetic radiation of rotating nuclei
journal, September 1987

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

Blue: a database for high-fold γ-ray coincidence data
journal, April 2001

New Physics Opportunities at Gammasphere
journal, January 1996

Higher Order Corrections to the Cranking Model
journal, May 1965

Roles of triaxiality and residual interaction in signature inversions of A ∼ 130 odd-odd nuclei
journal, May 1994

Isomerism in neutron-deficient iridium isotopes alpha- and beta-decay studies of 171–175Ir
journal, August 1992

Systematic features of signature inversion of ( $h_{11 / 2}$ $)_{p}$ ( $i_{13 / 2}$ $)_{n}$ bands in doubly odd nuclei around A ∼160
journal, November 1995

High-spin structure of 167W and 168W
journal, October 1992

Studies of high-spin states in rare-earth nuclei using angular momentum projection method
journal, September 1991

Quadrupole pairing interaction and signature inversion
journal, April 2000