Publications (41)
Direct observation of the decay of first excited Hoyle state in C
T. K. Rana, S. Bhattacharya, C. Bhattacharya +12
An excited state of C having excitation energy E 9.65 0.02 MeV and width (FWHM) 55 keV, which decays to three -particles via Hoyle state ($E…
Measurement of the Hoyle State Radiative Transition Width
T. K. Rana, Deepak Pandit, S. Manna +30
The radiative decay of the Hoyle state is the doorway to the production of heavier elements in stellar environment. Here we report, an exclusive measurement of electric quadruple (…
Nuclear level density and thermal properties of Sn from neutron evaporation
Pratap Roy, K. Banerjee, T. K. Rana +14
The nuclear level density of Sn has been measured in an excitation energy range of 2 - 9 MeV using the experimental neutron evaporation spectra from the In($…
Development of a Reference Database for Beta-Delayed Neutron Emission
P. Dimitriou, I. Dillmann, B. Singh +30
Beta-delayed neutron emission is important for nuclear structure and astrophysics as well as for reactor applications. Significant advances in nuclear experimental techniques in th…
Characterization of fragment emission in ^{20}Ne (7 - 10 MeV/nucleon) + ^{12}C reactions
Aparajita Dey, C. Bhattacharya, S. Bhattacharya +14
The inclusive energy distributions of the complex fragments (3 Z 7) emitted from the bombardment of ^{12}C by ^{20}Ne beams with incident energies between 145 and 200…
ChAKRA : The high resolution charged particle detector array at VECC
Samir Kundu, T. K. Rana, C. Bhattacharya +12
A large 4 array of charged particle detectors has been developed at Variable Energy Cyclotron Centre to facilitate high resolution charged particle reaction and spectroscopy st…
No influence of a N=126 Neutron Shell Closure in Fission Fragment Mass Distributions
A. Chaudhuri, T. K. Ghosh, K. Banerjee +24
Mass distributions of the fragments in the fission of Po and the N=126 neutron shell closed nucleus Po have been measured. No significant deviation of mass distribu…
Evidence for the reduction of nuclear level density away from the -stability line
Pratap Roy, K. Banerjee, T. K. Rana +14
The isospin dependence of nuclear level density has been investigated by analyzing the spectra of evaporated neutrons from excited Sn and Te nuclei. These nuclei ar…
Onset of deformation at in Bi nuclei
H. Pai, G. Mukherjee, R. Raut +20
The high spin states in Bi has been studied by -ray spectroscopic method using the Ta(Ne, 6n) fusion evaporation reaction at 130 MeV. The coincide…
Measurement of Giant Dipole Resonance width at low temperature: A new experimental perspective
S. Mukhopadhyay, Deepak Pandit, Surajit Pal +13
The systematic evolution of the giant dipole resonance (GDR) width in the temperature region of 0.9 ~ 1.4 MeV has been measured experimentally for 119Sb using alpha induced fusion…
Universality of Shell Effects in Fusion-Fission Mass Distributions
J. Buete, B. M. A. Swinton-Bland, D. J. Hinde +10
We present the results of a broad, systematic study of heavy-ion induced fission mass distributions for every even-Z compound nucleus () from Gd to T…
Direct Evidence of Washing out of Nuclear Shell Effects
A. Chaudhuri, T. K. Ghosh, K. Banerjee +12
Constraining excitation energy at which nuclear shell effect washes out has important implications on the production of super heavy elements and many other fields of nuclear physic…
Fission fragment mass distributions in reactions populating 200Pb
A. Chaudhuri, A. Sen, T. K. Ghosh +20
The fission fragment mass distributions have been measured in the reactions 16O + 184W and 19F+ 181Ta populating the same compound nucleus 200Pb? at similar excitation energies. It…
Probing the critical behavior in the evolution of GDR width at very low temperatures in A~100 mass region
Balaram Dey, Debasish Mondal, Deepak Pandit +8
The influence of giant dipole resonance (GDR) induced quadrupole moment on GDR width at low temperatures is investigated experimentally by measuring GDR width systematically in the…
Extreme nuclear shapes examined via Giant Dipole Resonance lineshapes in hot light mass system
Deepak Pandit, S. Mukhopadhyay, Srijit Bhattacharya +12
The influence of alpha clustering on nuclear reaction dynamics is investigated using the giant dipole resonance (GDR) lineshape studies in the reactions 20Ne (Elab=145,160 MeV) + 1…
Giant Dipole Resonance Width in near-Sn Nuclei at Low Temperature and High Angular Momentum
Srijit Bhattacharya, S. Mukhopadhyay, Deepak Pandit +12
High energy gamma-rays in coincidence with low energy yrast gamma-rays have been measured from 113Sb, at excitation energies of 109 and 122 MeV, formed by bombarding 20Ne on 93Nb a…
Experimental Determination of / for Finite Nuclear Matter
Debasish Mondal, Deepak Pandit, S. Mukhopadhyay +9
We present, for the first time, simultaneous determination of shear viscosity () and entropy density () and thus, for equilibrated nuclear systems from 30…
Study of Dissipative Collisions of Ne (7-11 MeV/nucleon) + Al
Aparajita Dey, C. Bhattacharya, S. Bhattacharya +7
The inclusive energy distributions of complex fragments (3 Z 9) emitted in the reactions Ne (145, 158, 200, 218 MeV) + Al have been measured in the angul…
Neutron response of the LAMBDA spectrometer and neutron interaction length in BaF2
Balaram Dey, Debasish Mondal, Deepak Pandit +6
We report on the neutron response of the LAMBDA spectrometer developed earlier for high-energy gamma-ray measurement. The energy dependent neutron detection efficiency of the spect…
Crossing of large multiquasiparticle magnetic-rotation bands in Bi
H. Pai, G. Mukherjee, S. Bhattacharyya +17
High-spin states in the doubly-odd Bi nucleus have been studied by using the Re(O, xn) reactions at the beam energy of 112.5 MeV. coincidence wer…
Band structures and intruder state in Tl
H. Pai, G. Mukherjee, S. Bhattacharya +20
The excited states in the odd- Tl nucleus have been studied by populating them using the Au(, 4)Tl reaction at the beam energy of 48 MeV. The $γ-…
Evidence of large nuclear deformation of S formed in Ne + C reaction
Aparajita Dey, S. Bhattacharya, C. Bhattacharya +6
Deformations of hot composite S formed in the reaction Ne ( 7 -- 10 MeV/nucleon) + C have been estimated from the respective inclusive -particl…
Study of transfer reaction channel in C + Al system
Aparajita Dey, M. Biswas, C. Bhattacharya +20
The 1p transfer channel in the Al(C, B)Si reaction has been studied at E = 73, 81 and 85 MeV. The finite range distorted wave Born approximation…
LAMBDA: Large Area Modular BaF2 Detector Array for the measurement of high energy gamma rays
S. Mukhopadhyay, Srijit Bhattacharya, Deepak Pandit +9
A large BaF2 detector array along with its dedicated CAMAC electronics and VME based data acquisition system has been designed, constructed and installed successfully at VECC, Kolk…
Detailed investigation on the possibility of using EJ-299-33A plastic scintillator for fast neutron spectroscopy in large scale experiments
Pratap Roy, K. Banerjee, A. K. Saha +5
Detailed characterization of the newly available plastic scintillator (EJ-299-33A) having the pulse shape discrimination (PSD) property has been carried out in case of a large-size…
First (calibration) experiment using proton beam from FRENA at SINP
C. Basu, K. Banerjee, T. K. Ghosh +21
This work presents the first calibration experiment of a 3 MV Tandetron accelerator, FRENA, performed in May 2022. The Li(p,n) reaction threshold was measured to calibrate the…
Excitation energy and angular momentum dependence of the nuclear level density parameter around A110
Pratap Roy, S. Mukhopadhyay, Mamta Aggarwal +14
Neutron kinetic energy spectra in coincidence with low-energy -ray multiplicities have been measured around 110 in the O, Ne + Nb reactions in…
Nuclear temperatures from the evaporation fragment spectra and observed anomalies
A. Ray, A. De, A. Chatterjee +4
The extreme back-angle evaporation spectra of alpha, lithium, beryllium, boron and carbon from different compound nuclei near A=100 (EX=76-210 MeV) have been compared with the pred…
Survival of orbiting in Ne (7 - 10 MeV/nucleon) + C reactions
C. Bhattacharya, A. Dey, S. Kundu +15
The inclusive energy distributions of fragments with Z 3 emitted from the bombardment of C by Ne beams with incident energies between 145 and 200 MeV have been…
Light charged particle emission from hot S formed in Ne + C reaction
Aparajita Dey, S. Bhattacharya, C. Bhattacharya +7
Inclusive energy distributions for light charged particles ( and ) have been measured in the Ne (158, 170, 180, 200 MeV) + C reactions in the angular ran…
Study of multi-neutron emission in the -decay of Li
F. Delaunay, N. L. Achouri, A. Algora +24
The kinematics of two-neutron emission following the -decay of Li was investigated for the first time by detecting the two neutrons in coincidence and by measuring their…
Deformation in 28Si* produced via 16O + 12C reaction
S. Kundu, C. Bhattacharya, S. Bhattacharya +6
The energy spectra of the particles emitted in the reactions O (7-10 MeV/nucleon) + C have been measured in the center of mass angular range of 25 $\less…
Experimental signature of collective enhancement in nuclear level density
Deepak Pandit, Srijit Bhattacharya, Debasish Mondal +7
We present a probable experimental signature of collective enhancement in the nuclear level density (NLD) by measuring the neutron and the giant dipole resonance (GDR) rays em…
Study of Mg through 1p pick up reaction Al(d,He)
Vishal Srivastava, C. Bhattacharya, T. K. Rana +17
The even-even nucleus Mg has been studied through the reaction Al(d,He) at 25 MeV beam energy. The spectroscopic factors have been extracted upto 7.50 MeV excit…
Fission fragment mass distribution in Po and At
A. Sen, T. K. Ghosh, S. Bhattacharya +16
Background: The influence of shell effect on the dynamics of the fusion fission process and it's evolution with excitation energy in the pre-actinide Hg-Pb region in general is a m…
Complex fragment emission in low energy light-ion reactions
S. Kundu, C. Bhattacharya, K. Banerjee +20
Inclusive energy spectra of the complex fragments (3 Z 5) emitted in the reactions C (77 MeV)+ Si, B (64 MeV)+ Si and C (73 MeV)+ $…
Sharp change over from compound nuclear fission to shape dependent quasi fission
T. K. Ghosh, K. Banerjee, C. Bhattacharya +9
Fission fragment mass distribution has been measured from the decay of Bk nucleus populating via two entrance channels with slight difference in mass asymmetries but belong…
Experimental investigation on the temperature dependence of the nuclear level density parameter
Balaram Dey, Deepak Pandit, Srijit Bhattacharya +8
The effect of temperature (T) and angular momentum (J) on the inverse level density parameter (k) has been studied by populating the compound nucleus Tc in the reaction $^{4…
Improved precision on the experimental E0 decay branching ratio of the Hoyle state
T. K. Eriksen, T. Kibédi, M. W. Reed +35
Stellar carbon synthesis occurs exclusively via the process, in which three particles fuse to form C in the excited Hoyle state, followed by electromagnetic decay…
-delayed neutron spectroscopy of As with MONSTER at IGISOL
A. Pérez de Rada Fiol, T. MartÃnez, D. Cano-Ott +35
The -delayed neutron emission in the As -decays has been measured at the Ion Guide Isotope Separator On Line facility of the Accelerator Laboratory of the Univer…
Preparation of Isotopically enriched Sn targets at VECC
Ratnesh Pandey, S. Kundu, K. Banerjee +14
Resistive heating and mechanical rolling methods have been employed to prepare isotopically enriched thin target foils of 116Sn (~380 μg/cm2), 124Sn(~400 μg/cm2) and thicker foil…