Dhruba Gupta

Dhruba Gupta
Professor

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Previous appointments:

Postdoctoral Research Associate/CSIR Pool Officer: Variable Energy Cyclotron Centre, Kolkata, INDIA : (2006 - 2008)

Postdoctoral Research Associate/Visiting Scientist: Institut de Physique Nucleaire, IN2P3-CNRS, Universite de Paris-Sud, FRANCE : (2004 - 2006)

Postdoctoral Research Associate: University of North Carolina at Chapel Hill & Triangle Universities Nuclear Laboratory, USA : (2001 - 2004)

Research interests:

Nuclear Astrophysics

https://sites.google.com/view/dhrubagupta/home















Contact:

Address: Department of Physics
Unified Academic Campus
Bose Institute
EN-80, Sector V
Bidhan Nagar
Kolkata - 700 091, India
E-Mail: dhruba[at]jcbose.ac.in
Phone: +91-33-23031167

Research:


Fig. 1 and 2: Experimental setup of IS 554 at HIE-ISOLDE, CERN, Geneva, Switzerland

Fig 3: Monte Carlo simulations for the experiment

Fig 4: Resonance state wave functions of an exotic nucleus using supersymmetric quantum mechanics





I work in the area of nuclear physics involving rare isotope beams. Presently a world-wide effort is put into pursuing rare isotope science to study nuclear structure, reactions and astrophysics. Experiments with these new isotopes will lead to a comprehensive understanding of nuclei and the origin of the elements in the universe. It is well known that there is a serious anomaly between the observed and Big Bang Nucleosynthesis predicted abundance of 7Li, known as the cosmological lithium problem. I am trying to address this issue through breakup and transfer reactions of 7Be. We would be carry- ing out an experiment at CERN, Geneva, Switzerland, in November 2018 with me as the principal investigator. This measurement at HIE-ISOLDE, CERN is immensely important to address the 7Li problem, particularly in the context of the newly conjectured light electrically neutral particles X. I also collaborated in an experiment to study n-p pairing carried out at the rare isotope beam facility GANIL, Caen, France. To complement experimental findings on unstable/unbound nuclei, we have developed a robust theoretical framework to study resonances. The resonance states and wave functions of unstable/unbound nuclei were reproduced for the first time by adopting supersymmetric quantum mechanics. The energy and width of the resonance states of the unstable 11Be and unbound 15Be nuclei obtained were in excellent agreement with experimental data. It becomes apparent that the present framework gives excellent results and is a powerful tool to theoretically complement the increasingly important accelerator based experiments with unbound nuclei. 







Publications:

Resonance state wave functions of  15Be using supersymmetric quantum mechanics

S. K. Dutta, D. Gupta, Swapan K. Saha

Phys. Lett. B 776, 464 (2018)


Study of resonance states of 11Be with isospectral bound state microscopic potential

S. K. Dutta, D. Gupta, D. Das and Swapan K. Saha

Jour. Phys. G: Nucl. Part. Phys. 41, 095104 (2014)


Deformation in 28Si* produced via 16O + 12C reaction

S. Kundu, C. Bhattacharya, S. Bhattacharya, T. K. Rana, K. Banerjee, S. Muhkopadhayay, D. Gupta, A. Dey, and R. Saha

Phys. Rev. C 87, 024602 (2013)


Study of the 1p transfer channel in the 12C + 27Al reaction at 6–7 MeV per nucleon

A. Dey, S Kundu, T K Rana, K Banerjee, C Bhattacharya, M Biswas, T K Ghosh, H Pai, G Mukherjee, J K Meena, D. Gupta, S Bhattacharya, S Mukhopadhyay, D Pandit, S R Banerjee, S. Kumar, A Chatterjee, K Ramachandran, K Mahata, S Santra and S Pandit

Phys. Scr. T150, 014011 (2012)


Onset of deformation at N = 112 in Bi nuclei

H. Pai, G. Mukherjee, R. Raut, S. K. Basu, A. Goswami, S. Chanda, T. Bhattacharjee, S. Bhattacharyya, C. Bhattacharya, S. Bhattacharya, S. R. Banerjee, S. Kundu, K. Banerjee, A. Dey, T. K. Rana, J. K. Meena, D. Gupta, S. Mukhopadhyay, Srijit Bhattacharya, Sudeb Bhattacharya, S. Ganguly, R. Kshetri, and M. K. Pradhan

Phys. Rev. C 85, 064317 (2012)


Complex-fragment emission in low-energy light-ion reactions

S. Kundu, C. Bhattacharya, K. Banerjee, T. K. Rana, S. Bhattacharya, A. Dey, T. K. Ghosh, G. Mukherjee, J. K. Meena, P. Mali, S. Mukhopadhyay, D. Pandit, H. Pai, S. R. Banerjee, D. Gupta, P. Banerjee, Suresh Kumar, A. Shrivastava, A. Chatterjee, K. Ramachandran, K. Mahata, S.K. Pandit, and S. Santra

Phys. Rev. C 85, 064607 (2012)


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Recognition:

    Teaching:

    1) B17:  Methods in Physics  (PhD coursework of Bose Institute)

    2) MPHC 4309: Nuclear Physics (Integrated M.Sc-Ph.D coursework of Bose Institute and University of Calcutta)

    Students:

    Image Name Designation Department Campus Contact number Email
    profile image Sahanaj Aktar Banu Senior Research Fellow Physics Main 23031167 sahanaj

    Former:

    Dr. Mandira Sinha, Research Associate

    Ms. Kabita Kundalia, Research Scholar

    Mr. Mustak Ali, Research Scholar

    Mr. Subhankar Maity, Research Scholar

    Ms. Sahanaj Aktar Banu, Research Scholar

    Group News:

    Feb 10, 2020: Sahanaj and Subhankar attend School cum Workshop in Low Energy Nuclear Astrophysics(SLENA) at SINP, Kolkata 


    Dec 10, 2019 :  Dhruba leaves for India from CERN



    Dec 6, 2019 : Dhruba gives a talk on experiment IS 554 at the ISOLDE Workshop and Users meeting 2019


    Dec 04, 2019: Sumana joins our lab as Senior Project Associate


    Dec 1, 2019 : Dhruba leaves for CERN


    Oct 10, 2019 : Sahanaj attend DST-SERB school on Role of Symmetries in Nuclear Physics at  

                            Amity University, Noida.


    July 15, 2019 : Mustak and Kabita  attend  IUAC School on Nuclear Reactions at IUAC, New Delhi


    Feb 11, 2019 : Mustak, Kabita and  Subhankar attend SERB School on Nuclear Astrophysics at SINP, Kolkata 


    Dec 8, 2018 :  Mustak and Kabita leaves for India from CERN


    Dec 5, 2018 :  Mustak and Kabita presents IS 554 preliminary results at the ISOLDE Workshop


    Nov 27, 2018 :  Dhruba leaves for India from CERN


    Nov 21, 2018 :  11 AM, run ends.  

    There were lots of tense moments but ultimately we got plenty of good data.

    Dhruba gives a presentation on IS 554 at the physics group meeting, ISOLDE


    Nov 16, 2018 :  We get 7Be beam @ ISOLDE

    Swapan reaches CERN for experiment IS 554


    Nov 13, 2018 :  IS 554 run meeting @ ISOLDE, we start run with 12C on 208Pb 


    Nov 5, 2018 : Dhruba and Kabita reaches CERN for experiment IS 554


    Sep 18, 2018 : Mustak reaches CERN for setup and preparations of experiment IS 554