scholarly journals Study of neutron-deficient mercury isotopes Preliminary results on 189Hg

2019 ◽  
Vol 223 ◽  
pp. 01072
Author(s):  
Irene Zanon ◽  
Marco Siciliano ◽  
Alain Goasduff ◽  
Philipp R. John
Keyword(s):  
Shape Coexistence ◽  
Shape Transition ◽  
Isotopic Chain ◽  
Preliminary Results ◽  
Mercury Isotopes ◽  
Evaporation Reaction ◽  
Fusion Evaporation Reaction

The mercury isotopic chain is depicted as one of the best fields to observe many phenomena related to collectivity evolution as, for instance, shape transition, shape coexistence or shape staggering. In this context, the 189Hg presents several interesting aspects and is still relatively unexplored. The nucleus has been studied at the Laboratori Nazionali di Legnaro using a fusion-evaporation reaction and the γ rays emitted have been detected by the GALILEO array, coupled with Neutron Wall and the GALILEO plunger. The presorting and the preliminary results are presented.

Self consistent calculations of a possible shape transition in neutron deficient mercury isotopes

1973 ◽  
Vol 46 (1) ◽  
pp. 11-14 ◽  
Author(s):  
M. Cailliau ◽  
Jocelyne Leterssier ◽  
H. Flocard ◽  
P. Quentin
Keyword(s):  
Shape Transition ◽  
Mercury Isotopes ◽  
Self Consistent

scholarly journals Experimental study of nuclei in the vicinity of the “island of inversion” through the fusion-evaporation reaction

2009 ◽  
Vol 80 (3) ◽  
Author(s):  
R. Chakrabarti ◽  
S. Mukhopadhyay ◽  
Krishichayan ◽  
A. Chakraborty ◽  
A. Ghosh ◽  
...  
Keyword(s):  
Experimental Study ◽  
Island Of Inversion ◽  
Evaporation Reaction ◽  
Fusion Evaporation Reaction

scholarly journals Shape transition in the neutron-rich Y nuclei and its evolution across the isotopic chain

2019 ◽  
Vol 223 ◽  
pp. 01024
Author(s):  
Łukasz W. Iskra ◽  
Bogdan Fornal ◽  
Silvia Leoni ◽  
Caterina Michelagnoli ◽  
Simone Bottoni ◽  
...  
Keyword(s):  
Excitation Energy ◽  
High Spin ◽  
Gamma Rays ◽  
Gamma Spectroscopy ◽  
Shape Transition ◽  
Isotopic Chain ◽  
Induced Fission

The evolution of the deformation across the Y isotopic chain, in the vicinity of N = 60 boundary, has been studied using gamma spectroscopy methods. The nuclei of interest have been produced by neutron induced fission of 235U and 241Pu targets, during two experimental campaigns named EXILL and FIPPS at the Institute Laue-Langevin in Grenoble. The emitted gamma rays have been collected by HPGe and LaBr3 detectors providing the identification of the high-spin levels in the 94Y and 96Y isotopes up to 6 MeV excitation energy, as well as information about the half-lives of the in-band states in the 98Y nucleus. The obtained results shed new light on the onset of deformation in the neutron-rich Y isotopes and, in general, in the A ≈ 100 region.

scholarly journals Shape coexistence and shape transition in self-conjugate nucleus 72Kr and the tensor force

2017 ◽  
Vol 92 (11) ◽  
pp. 114008 ◽  
Author(s):  
K Kaneko ◽  
Y Sun ◽  
R Wadsworth
Keyword(s):  
Tensor Force ◽  
Shape Coexistence ◽  
Shape Transition

Shape coexistence and shape transition in light nuclei

2018 ◽  
Author(s):  
G. Saxena ◽  
M. Kumawat ◽  
U. K. Singh ◽  
M. Kaushik ◽  
S. K. Jain
Keyword(s):  
Light Nuclei ◽  
Shape Coexistence ◽  
Shape Transition

LIFETIME MEASUREMENTS IN 134Pr AND CHIRALITY IN NUCLEI

2006 ◽  
Vol 15 (07) ◽  
pp. 1531-1540 ◽  
Author(s):  
D. TONEV ◽  
P. PETKOV ◽  
D. L. BALABANSKI ◽  
G. DE ANGELIS ◽  
A. GADEA ◽  
...  
Keyword(s):  
Doppler Shift ◽  
Transition Probabilities ◽  
Experimental Results ◽  
Lifetime Measurements ◽  
Evaporation Reaction ◽  
Doppler Shift Attenuation ◽  
Recoil Distance ◽  
Reduced Transition Probabilities ◽  
Fusion Evaporation Reaction

Lifetimes of exited states in 134 Pr were measured be means of the recoil distance Doppler-shift and Doppler-shift attenuation techniques. The experiments were performed at IReS, Strasbourg using the EUROBALL IV spectrometer, in conjunction with the inner BGO ball and the Cologne coincidence plunger apparatus. Exited states in 134 Pr were populated in the fusion-evaporation reaction 119 Sn (19 F , 4 n )134 Pr . Reduced transition probabilities in 134 Pr are compared to the predictions of the two quasiparticle+triaxial rotor and interacting boson fermion-fermion models. The experimental results do not support the presence of static chirality in 134 Pr underlying the importance of shape fluctuations. Only within a dynamical context the presence of intrinsic chirality in 134 Pr can be supported.

scholarly journals The Dominance of Proton/Neutron Evaporation Exit-Channel in a Fusion-Evaporation Reaction: The Effect of Target Nuclear Ratio (N/Z)

2020 ◽  
Vol 9 (6) ◽  
pp. 456-457
Keyword(s):  
Cross Section ◽  
Neutron Emission ◽  
Target Material ◽  
Evaporation Residue ◽  
Proton Emission ◽  
Statistical Model Calculation ◽  
Evaporation Reaction ◽  
Neutron Evaporation ◽  
Calculation Code ◽  
Fusion Evaporation Reaction

Cross section of different evaporation residue have been calculated in 112Sn+16O (Neuron/Proton (N/Z) of the 112Sn target is 1.24) and124Sn+16O reaction (N/Z of the 124Sn is 1.48) with beam energy of 80 MeV using statistical model calculation code PACE4. These calculations predicts that the proton emission channels are predicted to be dominant when the N/Z ratio is small (i.e in the first reaction) whereas the neutron emission outgoing channels dominant in the second reaction when N/Z is large. Experimental phenomenon also revealed the fact that in order to populate the proton or neutron reach nucleus we have to choose the target material accordingly.

Sign in / Sign up

Export Citation Format

Share Document