Evolution of E2 strength in the rare-earth isotopes Hf174,176,178,180

Wiederhold, J.; Werner, V.; Kern, R.; Pietralla, N.; Bucurescu, D.; Carroll, R.; Cooper, N.; Daniel, T.; Filipescu, D.; Florea, N.; Gerst, R-B.; Ghita, D.; Gurgi, L.; Jolie, J.; Ilieva, R. S.; Lica, R.; Marginean, N.; Marginean, R.; Mihai, C.; Mitu, I. O.; Naqvi, F.; Nita, C.; Rudigier, M.; Stegemann, S.; Pascu, S.; Regan, P. H.

doi:10.1103/physrevc.99.024316

Title: Evolution of $E 2$ strength in the rare-earth isotopes ${}^{174, 176, 178, 180}{Hf}$

Journal Article · Thu Feb 21 00:00:00 EST 2019 · Physical Review C

DOI:https://doi.org/10.1103/physrevc.99.024316· OSTI ID:1610164

Wiederhold, J. ^[1]; Werner, V. ^[2]; Kern, R. ^[1]; Pietralla, N. ^[1]; Bucurescu, D. ^[3]; Carroll, R. ^[4]; Cooper, N. ^[5]; Daniel, T. ^[6]; Filipescu, D. ^[3]; Florea, N. ^[3]; Gerst, R-B. ^[7]; Ghita, D. ^[3]; Gurgi, L. ^[4]; Jolie, J. ^[7]; Ilieva, R. S. ^[8]; Lica, R. ^[3]; Marginean, N. ^[3]; Marginean, R. ^[3]; Mihai, C. ^[3]; Mitu, I. O. ^[3] more »

Technische Univ. Darmstadt (Germany)
Technische Univ. Darmstadt (Germany); Yale Univ., New Haven, CT (United States)
“Horia Hulubei” National Inst. for Physics and Nuclear Engineering, Bucharest-Magurele (Romania)
Univ. of Surrey (United Kingdom)
Yale Univ., New Haven, CT (United States); Univ. of Notre Dame, IN (United States)
Univ. of Surrey (United Kingdom); Benue State Univ., Makurdi (Nigeria)
Univ. zu Koln (Germany)
Yale Univ., New Haven, CT (United States); Univ. of Surrey (United Kingdom)
Yale Univ., New Haven, CT (United States)
Univ. of Surrey (United Kingdom); Univ. zu Koln (Germany)
Univ. zu Koln (Germany); KU Leuven (Belgium)
Univ. of Surrey (United Kingdom); National Physical Lab., Middlesex (United Kingdom)

Mean lifetimes of yrast states of the isotopes ^{174,176,178,180}Hf have been measured using fast-electronic scintillation timing. Excited states of ^174,176,178Hf were populated via β decay, while ¹⁸⁰Hf was populated via Coulomb excitation. The lifetimes of the 2⁺₁ and 4⁺₁ states of all isotopes and the lifetimes of the 6⁺₁ states of ^174,178Hf were measured, using the slope and the centroid shift methods. The mean lifetime, τ(4⁺₁) = 85 (13) ps, of ¹⁷⁸Hf has been determined for the first time. In addition, the mean lifetimes of the 2^–₁ and the 3^–₁ states of ¹⁷⁶Hf have been determined. Systematic uncertainties on the evolution of data as a function of neutron number were reduced by using the same setup for all the isotopes of interest. The data are in agreement with other recent lifetime measurements where available and shows a shift of the maximum of collectivity for the Hf isotopic chain from neutron midshell at N = 104 to N = 100.

View Accepted Manuscript (DOE)

Cite

Export

Save

Research Organization:: Yale Univ., New Haven, CT (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-91ER40609

OSTI ID:: 1610164

Alternate ID(s):: OSTI ID: 1546159

Journal Information:: Physical Review C, Vol. 99, Issue 2; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

Citation Metrics:

Cited by: 6 works

Citation information provided by
Web of Science

References (51)

Direct Empirical Correlation between Proton-Neutron Interaction Strengths and the Growth of Collectivity in Nuclei Cakirli, R. B.; Casten, R. F. Physical Review Letters, Vol. 96, Issue 13 https://doi.org/10.1103/PhysRevLett.96.132501	journal	April 2006
Empirical proton-neutron interaction energies. Linearity and saturation phenomena Zhang, J. -Y.; Casten, R. F.; Brenner, D. S. Physics Letters B, Vol. 227, Issue 1 https://doi.org/10.1016/0370-2693(89)91273-2	journal	August 1989
Systematics of $g$ factors of $2_{1}^{+}$ states in even-even nuclei from Gd to Pt: A microscopic description by the projected shell model Bian, Bao-An; Di, Yao-Min; Long, Gui-Lu Physical Review C, Vol. 75, Issue 1 https://doi.org/10.1103/PhysRevC.75.014312	journal	January 2007
Nuclear Data Sheets for A = 174 Browne, E.; Junde, Huo Nuclear Data Sheets, Vol. 87, Issue 1 https://doi.org/10.1006/ndsh.1999.0015	journal	May 1999
Nuclear Data Sheets for A = 176 Basunia, M. S. Nuclear Data Sheets, Vol. 107, Issue 4 https://doi.org/10.1016/j.nds.2006.03.001	journal	April 2006
Evolution of collectivity near mid-shell from excited-state lifetime measurements in rare earth nuclei Werner, V.; Cooper, N.; Régis, J. -M. Physical Review C, Vol. 93, Issue 3 https://doi.org/10.1103/PhysRevC.93.034323	journal	March 2016
Photon scattering experiments off $^{176} Hf$ and the systematics of low-lying dipole modes in the stable even-even Hf isotopes $^{176, 178, 180} Hf$ Scheck, M.; Belic, D.; von Brentano, P. Physical Review C, Vol. 67, Issue 6 https://doi.org/10.1103/PhysRevC.67.064313	journal	June 2003
Nuclear Data Sheets for A = 168 Baglin, Coral M. Nuclear Data Sheets, Vol. 111, Issue 7 https://doi.org/10.1016/j.nds.2010.07.001	journal	July 2010
Nuclear Shapes Studied by Coulomb Excitation Cline, D. Annual Review of Nuclear and Particle Science, Vol. 36, Issue 1 https://doi.org/10.1146/annurev.ns.36.120186.003343	journal	December 1986
Intrinsic Quadrupole Moments and Shapes of Nuclear Ground States and Excited States Kumar, Krishna Physical Review Letters, Vol. 28, Issue 4 https://doi.org/10.1103/PhysRevLett.28.249	journal	January 1972
The AME2016 atomic mass evaluation (II). Tables, graphs and references Wang, Meng; Audi, G.; Kondev, F. G. Chinese Physics C, Vol. 41, Issue 3 https://doi.org/10.1088/1674-1137/41/3/030003	journal	March 2017
The AME2016 atomic mass evaluation (I). Evaluation of input data; and adjustment procedures Huang, W. J.; Audi, G.; Wang, Meng Chinese Physics C, Vol. 41, Issue 3 https://doi.org/10.1088/1674-1137/41/3/030002	journal	March 2017
Consistent interpretation of B ( E 2) values and g factors in deformed nuclei Zhang, Jing-ye; Casten, R. F.; Wolf, A. Physical Review C, Vol. 73, Issue 3 https://doi.org/10.1103/PhysRevC.73.037301	journal	March 2006
Tables of E2 transition probabilities from the first $2^{+}$ states in even–even nuclei Pritychenko, B.; Birch, M.; Singh, B. Atomic Data and Nuclear Data Tables, Vol. 107 https://doi.org/10.1016/j.adt.2015.10.001	journal	January 2016
Lifetime of the first excited state in 172W and 178W Rudigier, M.; Régis, J. -M.; Jolie, J. Nuclear Physics A, Vol. 847, Issue 1-2 https://doi.org/10.1016/j.nuclphysa.2010.07.003	journal	December 2010
Nuclear ground-state masses and deformations: FRDM(2012) Möller, P.; Sierk, A. J.; Ichikawa, T. Atomic Data and Nuclear Data Tables, Vol. 109-110 https://doi.org/10.1016/j.adt.2015.10.002	journal	May 2016
Sub-nanosecond lifetime measurements using the Double Orange Spectrometer at the cologne 10MV Tandem accelerator Régis, J. -M.; Materna, Th.; Christen, S. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 606, Issue 3 https://doi.org/10.1016/j.nima.2009.04.008	journal	July 2009
Nuclear Data Sheets for A = 178 Achterberg, E.; Capurro, O. A.; Marti, G. V. Nuclear Data Sheets, Vol. 110, Issue 7 https://doi.org/10.1016/j.nds.2009.05.002	journal	July 2009
Simple relations among E2 matrix elements of low-lying collective states Werner, V.; von Brentano, P.; Jolos, R. V. Physics Letters B, Vol. 521, Issue 3-4 https://doi.org/10.1016/S0370-2693(01)01191-1	journal	November 2001
Low-K bands in 176Hf populated in the (α, 2n) reaction Khoo, T. L.; Waddington, J. C.; Preibisz, Z. Nuclear Physics A, Vol. 202, Issue 2 https://doi.org/10.1016/0375-9474(73)90225-X	journal	February 1973
Excited States of ${}^{174}{Hf}$ from the Decay of ${}^{174}{Ta}$ Gillin, M. T.; Peek, N. F. Physical Review C, Vol. 4, Issue 4 https://doi.org/10.1103/PhysRevC.4.1334	journal	October 1971
$g$ factor of the $2_{1}^{+}$ state of ${}^{164}{Yb}$ Berant, Z.; Wolf, A.; Zamfir, N. V. Physical Review C, Vol. 69, Issue 3 https://doi.org/10.1103/PhysRevC.69.034320	journal	March 2004
Lifetime measurement for the $2_{1}^{+}$ state of ${}^{170}{Hf}$ Costin, A.; Ahn, T.; Bochev, B. Physical Review C, Vol. 74, Issue 6 https://doi.org/10.1103/PhysRevC.74.067301	journal	December 2006
The ROSPHERE γ-ray spectroscopy array Bucurescu, D.; Căta-Danil, I.; Ciocan, G. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 837 https://doi.org/10.1016/j.nima.2016.08.052	journal	November 2016
Nuclear Data Sheets for A = 162 Reich, C. W. Nuclear Data Sheets, Vol. 108, Issue 9 https://doi.org/10.1016/j.nds.2007.07.002	journal	September 2007
Nuclear Data Sheets for Reich, C. W. Nuclear Data Sheets, Vol. 105, Issue 3 https://doi.org/10.1016/j.nds.2005.08.001	journal	July 2005
Nuclear Data Sheets for A = 182 Singh, Balraj Nuclear Data Sheets, Vol. 130 https://doi.org/10.1016/j.nds.2015.11.002	journal	December 2015
Nuclear Data Sheets for A=158 Nica, N. Nuclear Data Sheets, Vol. 141 https://doi.org/10.1016/j.nds.2017.03.001	journal	March 2017
Nuclear Data Sheets for A=164 Singh, Balraj; Chen, Jun Nuclear Data Sheets, Vol. 147 https://doi.org/10.1016/j.nds.2018.01.001	journal	January 2018
The evolution of nuclear structure: the scheme and related correlations Casten, R. F.; Zamfir, N. V. Journal of Physics G: Nuclear and Particle Physics, Vol. 22, Issue 11 https://doi.org/10.1088/0954-3899/22/11/002	journal	November 1996
Evaluation of theoretical conversion coefficients using BrIcc Kibédi, T.; Burrows, T. W.; Trzhaskovskaya, M. B. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 589, Issue 2 https://doi.org/10.1016/j.nima.2008.02.051	journal	May 2008
Decays of ${}^{176}{Ta}$ , ${}^{176}{Lu}$ , and ${}^{176 m}{Lu}$ to Levels in ${}^{176}{Hf}$ Bernthal, F. M.; Rasmussen, J. O.; Hollander, J. M. Physical Review C, Vol. 3, Issue 3 https://doi.org/10.1103/PhysRevC.3.1294	journal	March 1971
In-beam measurements of sub-nanosecond nuclear lifetimes with a mixed array of HPGe and LaBr3:Ce detectors Mărginean, N.; Balabanski, D. L.; Bucurescu, D. The European Physical Journal A, Vol. 46, Issue 3 https://doi.org/10.1140/epja/i2010-11052-7	journal	October 2010
Nuclear Data Sheets for A = 156 Reich, C. W. Nuclear Data Sheets, Vol. 113, Issue 11 https://doi.org/10.1016/j.nds.2012.10.003	journal	November 2012
Numerical analysis of the time spectrum of delayed coincidences, I Boström, L.; Olsen, B.; Schneider, W. Nuclear Instruments and Methods, Vol. 44, Issue 1 https://doi.org/10.1016/0029-554X(66)90433-2	journal	September 1966
Fast-timing lifetime measurement of ${}^{152}{Gd}$ Wiederhold, J.; Kern, R.; Lizarazo, C. Physical Review C, Vol. 94, Issue 4 https://doi.org/10.1103/PhysRevC.94.044302	journal	October 2016
Proton-Neutron Interactions and the New Atomic Masses Cakirli, R. B.; Brenner, D. S.; Casten, R. F. Physical Review Letters, Vol. 94, Issue 9 https://doi.org/10.1103/PhysRevLett.94.092501	journal	March 2005
Hexadecapole deformations in actinide and trans-actinide nuclei Zamfir, N. V.; Hering, G.; Casten, R. F. Physics Letters B, Vol. 357, Issue 4 https://doi.org/10.1016/0370-2693(95)00978-T	journal	September 1995
Indication of a mini-valence Wigner-like energy in heavy nuclei Cakirli, R. B.; Blaum, K.; Casten, R. F. Physical Review C, Vol. 82, Issue 6 https://doi.org/10.1103/PhysRevC.82.061304	journal	December 2010
Nuclear Data Sheets for A = 172 Singh, Balraj Nuclear Data Sheets, Vol. 75, Issue 2 https://doi.org/10.1006/ndsh.1995.1025	journal	June 1995
A method for picosecond lifetime measurements for neutron-rich nuclei Moszyński, M.; Mach, H. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 277, Issue 2-3 https://doi.org/10.1016/0168-9002(89)90770-5	journal	May 1989
The mirror symmetric centroid difference method for picosecond lifetime measurements via <mml:math altimg="si0047.gif" overflow="scroll" xmlns:xocs="http://www.elsevier.com/xml/xocs/dtd" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.elsevier.com/xml/ja/dtd" xmlns:ja="http://www.elsevier.com/xml/ja/dtd" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:tb="http://www.elsevier.com/xml/common/table/dtd" xmlns:sb="http://www.elsevier.com/xml/common/struct-bib/dtd" xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:cals="http://www.elsevier.com/xml/common/cals/dtd"><mml:mi mathvariant="normal">γ</mml:mi><mml:mo>–</mml:mo><mml:mi mathvariant="normal">γ</mml:mi></mml:math> coincidences using very fast LaBr3(Ce) scintillator detectors Régis, J. -M.; Pascovici, G.; Jolie, J. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 622, Issue 1 https://doi.org/10.1016/j.nima.2010.07.047	journal	October 2010
Evolution of $E 2$ transition strength in deformed hafnium isotopes from new measurements on ${}^{172}{Hf}, {}^{174}{Hf}$ , and ${}^{176}{Hf}$ Rudigier, M.; Nomura, K.; Dannhoff, M. Physical Review C, Vol. 91, Issue 4 https://doi.org/10.1103/PhysRevC.91.044301	journal	April 2015
Nuclear Data Sheets for A = 180 McCutchan, E. A. Nuclear Data Sheets, Vol. 126 https://doi.org/10.1016/j.nds.2015.05.002	journal	May 2015
A method for picosecond lifetime measurements for neutron-rich nuclei Mach, H.; Gill, R. L.; Moszyński, M. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 280, Issue 1 https://doi.org/10.1016/0168-9002(89)91272-2	journal	August 1989
E1-M2-E3 mixing of the 1159.3 keV transition in 176Hf Löbner, K. E. G.; Smith, H. A.; Bunker, M. E. Nuclear Physics A, Vol. 179, Issue 2 https://doi.org/10.1016/0375-9474(72)90369-7	journal	January 1972
Calculation of Decay Times from Coincidence Experiments Bay, Z. Physical Review, Vol. 77, Issue 3 https://doi.org/10.1103/PhysRev.77.419	journal	February 1950
Nuclear Data Sheets for A = 170 Baglin, Coral M. Nuclear Data Sheets, Vol. 96, Issue 4 https://doi.org/10.1006/ndsh.2002.0015	journal	August 2002
Lifetime measurements of yrast states in ${}^{162}{Yb}$ and ${}^{166}{Hf}$ McCutchan, E. A.; Zamfir, N. V.; Casten, R. F. Physical Review C, Vol. 73, Issue 3 https://doi.org/10.1103/PhysRevC.73.034303	journal	March 2006
The generalized centroid difference method for picosecond sensitive determination of lifetimes of nuclear excited states using large fast-timing arrays Régis, J. -M.; Mach, H.; Simpson, G. S. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 726 https://doi.org/10.1016/j.nima.2013.05.126	journal	October 2013
Nuclear Data Sheets for A = 166 Baglin, Coral M. Nuclear Data Sheets, Vol. 109, Issue 5 https://doi.org/10.1016/j.nds.2008.04.001	journal	May 2008