Prompt-delayed 
                                $\gamma$
                                
                                    
                                        γ
                                    
                                
                            -ray spectroscopy with AGATA, EXOGAM and VAMOS++

Kim, Y.H.; Lemasson, A.; Rejmund, M.; Navin, A.; Biswas, S.; Michelagnoli, C.; Stefan, I.; Banik, R.; Bednarczyk, P.; Bhattacharya, Subhashish; Bhattacharyya, S.; Clément, E.; Crawford, H. L.; France, G. de; Fallon, P.; Goupil, J.; Jacquot, B.; Li, H. J.; Ljungvall, J.; Macchiavelli, A. O.; Maj, A.; Ménager, Loïc; Morel, V.; Palit, R.; Pérez-Vidal, R. M.; Ropert, J.; Schmitt, C.

doi:10.1140/epja/i2017-12353-y

Cited by 26 publications

(36 citation statements)

References 44 publications

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“…The lifetime τ (2 + 1 ) = 1.3(5) ps of the 2 + 1 state in 54 Ti determined in this work corresponds to a reduced transition probability of B(E 2; 2 + 1 → 0 + gs ) = 84 +53 −23 e 2 fm 4 and agrees with the adopted lifetime τ (2 + 1 ) = 1.53 (27) ps with corresponding B(E 2; 2 + 1 → 0 + gs ) = 72 +15 −11 e 2 fm 4 [9] within their error limits.…”

Section: Data Analysis and Resultssupporting

confidence: 84%

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Lifetime measurements in Ti52,54 to study shell evolution toward N=32

Goldkuhle¹,

Fransen²,

Blazhev³

et al. 2019

Phys. Rev. C

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Lifetimes of the excited states in the neutron-rich 52,54 Ti nuclei, produced in a multinucleon-transfer reaction, were measured by employing the Cologne plunger device and the recoil-distance Doppler-shift method. The experiment was performed at the Grand Accélérateur National d'Ions Lourds facility by using the Advanced Gamma Tracking Array for the γ-ray detection, coupled to the large-acceptance variable mode spectrometer for an event-by-event particle identification. A comparison between the transition probabilities obtained from the measured lifetimes of the 2 + 1 to 8 + 1 yrast states in 52,54 Ti and that from the shell-model calculations based on the

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Section: Data Analysis and Resultssupporting

confidence: 84%

“…1 of Ref. [27] (without the EXOGAM detectors). The focal plane detection system was used to identify the mass (A), charge (Q) and atomic number (Z) of the reaction products.…”

Section: -2mentioning

confidence: 99%

Lifetime measurements in Ti52,54 to study shell evolution toward N=32

Goldkuhle¹,

Fransen²,

Blazhev³

et al. 2019

Phys. Rev. C

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“…Gamma-ray interaction points, determined by Pulse Shape Analysis (PSA) and GRID search algorithm techniques, were tracked by using the Orsay Forward Tracking (OFT) algorithm, as described in Ref. [32]. The delayed γ rays (γ D ) were detected by using seven EXOGAM HPGe Clover detectors [33], arranged in a wall-like configuration at the focal plane of VAMOS++.…”

Section: Methodsmentioning

confidence: 99%

“…The particle identification (PID) spectra, intrinsic resolutions of the spectrometer ( Z/Z, A/A, q/q), and additional experimental details are given in Ref. [32].…”

Section: Methodsmentioning

confidence: 99%

Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich Sb51122–131 isotopes

Biswas¹,

Lemasson²,

Rejmund³

et al. 2019

Phys. Rev. C

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Background: Levels fulfilling the seniority scheme and relevant isomers are commonly observed features in semimagic nuclei; for example, in Sn isotopes (Z = 50). Seniority isomers in Sn, with dominantly pure neutron configurations, directly probe the underlying neutron-neutron (νν) interaction. Furthermore, an addition of a valence proton particle or hole, through neutron-proton (νπ) interaction, affects the neutron seniority as well as the angular momentum.

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“…Further details on VAMOS++ along with typical performances for the fission-fragments detection are given in Refs. [34,36,37]. Figure 1(a) shows the identification spectrum of targetlike ions, detected in coincidence with fission fragments, obtained from the correlation of the energy loss and the total energy, measured in SPIDER.…”

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confidence: 99%

First Direct Measurement of Isotopic Fission-Fragment Yields of U239

Ramos¹,

Caamaño²,

Lemasson³

et al. 2019

Phys. Rev. Lett.

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A direct and complete measurement of isotopic fission-fragment yields of 239 U has been performed for the first time. The 239 U fissioning system was produced with an average excitation energy of 8.3 MeV in one-neutron transfer reactions between a 238 U beam and a 9 Be target at Coulomb barrier energies. The fission fragments were detected and isotopically identified using the VAMOS++ spectrometer at the GANIL facility. This measurement allows to directly evaluate the fission models at excitation energies of fast neutrons, relevant for next-generation nuclear reactors. The present data, in agreement with model calculations, do not support the recently reported anomaly in the fission-fragment yields of 239 U and confirm the persistence of spherical shell effects in the Sn region at excitation energies exceeding the fission barrier by few MeV.

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Prompt-delayed $\gamma$ γ -ray spectroscopy with AGATA, EXOGAM and VAMOS++

Cited by 26 publications

References 44 publications

Lifetime measurements in Ti52,54 to study shell evolution toward N=32

Lifetime measurements in Ti52,54 to study shell evolution toward N=32

Effects of one valence proton on seniority and angular momentum of neutrons in neutron-rich Sb51122–131 isotopes

First Direct Measurement of Isotopic Fission-Fragment Yields of U239

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