Experimental Study of the Nuclear Structure of 180Hf: Preliminary results


HNPS2021 Proceedings Cover
Published: Oct 17, 2022
Polytimos Vasileiou
http://orcid.org/0000-0003-1446-8619
Theo J. Mertzimekis
Achment Chalil
Aikaterini Zyriliou
Stefanos Pelonis
Varvara Lagaki
Georgios Siltzovalis
Margarita Efstathiou
Pavlos Koseoglu
Dennis Bonatsos
Andriana Martinou
Nikolay Minkov
Nicolae Marginean
Constantin Mihai
Nicoleta Florea
Sorin Ujeniuc
Andrei Tuturica
Cristian Costache
Radu Mihai
Lucian Stan
Dan Filipescu
Sebastian Toma
Ioana Gheorghe
Irina Dinescu
Alina Ionescu
Liviu Stoica
Stefana Calinescu
Andreea Oprea
Alexandru Stoica
Christophe Sotty
Cristina Clisu
Cristina Nita
Catalin Neascu
Abstract
This work features preliminary results from a recent experimental campaign at IFIN-HH, Romania, aimed at measuring lifetimes of excited states in the neutron-rich 180Hf, by means of the RDDS technique. The 181Ta(11B,12C)180Hf proton pick-up reaction was used to populate excited states in the 180Hf nucleus. The ROSPHERE array loaded with 25 HPGe detectors was employed for the detection of the γ transitions depopulating the levels of interest. The array was coupled to the SORCERER particle detector and a plunger device enabling the study of p-γ and p-γ-γ coinciding events. Six different plunger foil distances were chosen, allowing for the construction of the decay curves of the observed γ transitions of interest, from which the corresponding level lifetimes can subsequently be deduced.
Article Details
  • Section
  • Oral contributions
References
P.M. Walker and G.D. Dracoulis, Hyperfine Interact. 135, 83 (2001)
Nudat2, National Nuclear Data Center, www.nndc.bnl.gov/nudat2/
Dennis Bonatsos, Eur. Phys. J. A 53, 148 (2017)
Dennis Bonatsos et al., Phys. Rev. C 95, 064326 (2017)
N. Pillet, P. Quentin, J. Libert, Nucl. Phys. A 697 (2002), 141–163
Hussein N. Qasim, Falih H. Al-Khudair, Nucl. Phys. A (2020), 121962
S. Zhu, Phys. Rev. C 102, 044326 (2020)
A.M. Khalaf, A.M. Ismail, A.A. Zaki, Nucl. Phys. A 996 (2020), 121704
V. Rani et al., Eur. Phys. J. A 57 (2021) 274
I.E. Assimakis, et al., arXiv:1811.01071 (2018)
A. Martinou, et al., Eur. Phys. J. A 57, 84 (2021)
K. Heyde and J.L. Woods, Rev. Mod. Phys. 83 (2011)
T.J. Mertzimekis et al., NIM A 807, (2016) 56
J. Wiederhold et al., Phys. Rev. C 99 (2019), 024316
A. Chalil, et al. (in prep.)
D. Bucurescu, et al., NIM A 837, 1 (2016).
T. Beck, et al., NIM A 951, 163090 (2020).
A. Dewald, O. Möller, P. Petkov, Prog. Part. Nucl. Phys. 67, 786 (2012)