Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2(+) state in C-16 and O-20

M. Ciemala; S. Ziliani; F. C. L. Crespi; S. Leoni; B. Fornal; A. Maj; P. Bednarczyk; G. Benzoni; A. Bracco; C. Boiano; S. Bottoni; S. Brambilla; M. Bast; M. Beckers; T. Braunroth; F. Camera; N. Cieplicka-Orynczak; E. Clement; S. Coelli; O. Dorvaux; S. Erturk; G. de France; C. Fransen; A. Goldkuhle; J. Grebosz; M. N. Harakeh; L. W. Iskra; B. Jacquot; A. Karpov; M. Kicinska-Habior; Y. Kim; M. Kmiecik; A. Lemasson; S. M. Lenzi; M. Lewitowicz; H. Li; I Matea; K. Mazurek; C. Michelagnoli; M. Matejska-Minda; B. Million; C. Mueller-Gatermann; V Nanal; P. Napiorkowski; D. R. Napoli; R. Palit; M. Rejmund; Ch Schmitt; M. Stanoiu; I Stefan; E. Vardaci; B. Wasilewska; O. Wieland; M. Zieblinski; M. Zielinska; A. Atac; D. Barrientos; B. Birkenbach; A. J. Boston; B. Cederwall; L. Charles; J. Collado; D. M. Cullen; P. Desesquelles; C. Domingo-Pardo; J. Dudouet; J. Eberth; V Gonzalez; J. Goupil; L. J. Harkness-Brennan; H. Hess; D. S. Judson; A. Jungclaus; W. Korten; M. Labiche; L. Alexis; R. Menegazzo; D. Mengoni; Johan Nyberg; R. M. Perez-Vidal; Zs Podolyak; A. Pullia; F. Recchia; P. Reiter; F. Saillant; M. D. Salsac; E. Sanchis; O. Stezowski; C. Theisen; J. J. Valiente-Dobon; J. D. Holt; J. Menendez; A. Schwenk; J. Simonis

doi:10.1103/PhysRevC.101.021303

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Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2(+) state in C-16 and O-20

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Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2(+) state in C-16 and O-20

M. Ciemala, S. Ziliani, F. C. L. Crespi, S. Leoni, B. Fornal, A. Maj, P. Bednarczyk, G. Benzoni, A. Bracco, C. Boiano, …

Physical review. C, Vol.101(2), 021303

2020

DOI: https://doi.org/10.1103/PhysRevC.101.021303

Abstract

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Natural Sciences

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Physical Sciences

Subatomic Physics

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To test the predictive power of ab initio nuclear structure theory, the lifetime of the second 2(+) state in neutron-rich O-20, tau(2(2)(+)) = 150(-30)(+80) fs, and an estimate for the lifetime of the second 2(+) state in C-16 have been obtained for the first time. The results were achieved via a novel Monte Carlo technique that allowed us to measure nuclear state lifetimes in the tens-to-hundreds of femtoseconds range by analyzing the Doppler-shifted gamma-transition line shapes of products of low-energy transfer and deep-inelastic processes in the reaction O-18 (7.0 MeV/u) + Ta-181. The requested sensitivity could only be reached owing to the excellent performances of the Advanced gamma-Tracking Array AGATA, coupled to the PARIS scintillator array and to the VAMOS++ magnetic spectrometer. The experimental lifetimes agree with predictions of ab initio calculations using two- and three-nucleon interactions, obtained with the valence-space in-medium similarity renormalization group for O-20 and with the no-core shell model for C-16. The present measurement shows the power of electromagnetic observables, determined with high-precision gamma spectroscopy, to assess the quality of first-principles nuclear structure calculations, complementing common benchmarks based on nuclear energies. The proposed experimental approach will be essential for short lifetime measurements in unexplored regions of the nuclear chart, including r-process nuclei, when intense beams, produced by Isotope Separation On-Line (ISOL) techniques, become available.

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Title: Testing ab initio nuclear structure in neutron-rich nuclei
Creators: M. Ciemala - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
S. Ziliani
F. C. L. Crespi
S. Leoni
B. Fornal - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
A. Maj - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
P. Bednarczyk - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
G. Benzoni - Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
A. Bracco
C. Boiano - Mylan
S. Bottoni
S. Brambilla - Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
M. Bast - University of Cologne
M. Beckers - University of Cologne
T. Braunroth - University of Cologne
F. Camera
N. Cieplicka-Orynczak - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
E. Clement - Institut National de Physique Nucléaire et de Physique des Particules
S. Coelli - Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
O. Dorvaux - Institut National de Physique Nucléaire et de Physique des Particules
S. Erturk - Nigde Omer Halisdemir Univ, Sci & Art Fac, Dept Phys, Nigde, Turkey
G. de France - Institut National de Physique Nucléaire et de Physique des Particules
C. Fransen - University of Cologne
A. Goldkuhle - University of Cologne
J. Grebosz - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
M. N. Harakeh - KVI Ctr ForAdv Radiat Technol, Groningen, Netherlands
L. W. Iskra
B. Jacquot - Institut National de Physique Nucléaire et de Physique des Particules
A. Karpov - JINR, FLNR, Dubna 141980, Russia
M. Kicinska-Habior - University of Warsaw
Y. Kim - Institut National de Physique Nucléaire et de Physique des Particules
M. Kmiecik - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
A. Lemasson - Institut National de Physique Nucléaire et de Physique des Particules
S. M. Lenzi
M. Lewitowicz - Institut National de Physique Nucléaire et de Physique des Particules
H. Li - Institut National de Physique Nucléaire et de Physique des Particules
I Matea - IPN Orsay Lab, Orsay, France
K. Mazurek - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
C. Michelagnoli - ILL Grenoble, Grenoble, France
M. Matejska-Minda
B. Million - Ist Nazl Fis Nucl, Sez Milano, Via Celoria 16, I-20133 Milan, Italy
C. Mueller-Gatermann - University of Cologne
V Nanal - Tata Institute of Fundamental Research
P. Napiorkowski - University of Warsaw
D. R. Napoli - Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy
R. Palit - Tata Institute of Fundamental Research
M. Rejmund - Institut National de Physique Nucléaire et de Physique des Particules
Ch Schmitt - Institut National de Physique Nucléaire et de Physique des Particules
M. Stanoiu - Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
I Stefan - IPN Orsay Lab, Orsay, France
E. Vardaci
B. Wasilewska - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
O. Wieland - Mylan
M. Zieblinski - Inst Nucl Phys, PAN, PL-31342 Krakow, Poland
M. Zielinska - CEA Saclay
A. Atac - Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden
D. Barrientos - CERN, CH-1211 Geneva 23, Switzerland
B. Birkenbach - University of Cologne
A. J. Boston - University of Liverpool
B. Cederwall - Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden
L. Charles - Institut National de Physique Nucléaire et de Physique des Particules
J. Collado - Universitat de València
D. M. Cullen - University of Manchester
P. Desesquelles - University of Paris-Saclay
C. Domingo-Pardo - Universitat de València
J. Dudouet - Institut National de Physique Nucléaire et de Physique des Particules
J. Eberth - University of Cologne
V Gonzalez - Universitat de València
J. Goupil - Institut National de Physique Nucléaire et de Physique des Particules
L. J. Harkness-Brennan - University of Liverpool
H. Hess - University of Cologne
D. S. Judson - University of Liverpool
A. Jungclaus - CSIC, Inst Estruct Mat, Madrid, Spain
W. Korten - CEA Saclay
M. Labiche - STFC Daresbury Lab, Warrington WA4 4AD, Cheshire, England
L. Alexis - Institut National de Physique Nucléaire et de Physique des Particules
R. Menegazzo - Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy
D. Mengoni
Johan Nyberg - Kärnfysik
R. M. Perez-Vidal - Universitat de València
Zs Podolyak - University of Surrey
A. Pullia
F. Recchia
P. Reiter - University of Cologne
F. Saillant - Institut National de Physique Nucléaire et de Physique des Particules
M. D. Salsac - CEA Saclay
E. Sanchis - Universitat de València
O. Stezowski - Institut National de Physique Nucléaire et de Physique des Particules
C. Theisen - CEA Saclay
J. J. Valiente-Dobon - Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Italy
J. D. Holt
J. Menendez
A. Schwenk
J. Simonis - Johannes Gutenberg University Mainz
Publication Details: Physical review. C, Vol.101(2), 021303
Date published: 2020
Identifiers: 99822609202346
Academic Unit: School of Maths and Physics
Language: English
Resource Type: Journal article

Testing ab initio nuclear structure in neutron-rich nuclei: Lifetime measurements of second 2(+) state in C-16 and O-20

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