We are using gamma ray spectroscopy as a tool to explore nuclear structure and excitation modes in nuclei. The experiments related
to nuclear structure studies are performed using Indian National Gamma Array (INGA) at the accelerator facilities like TIFR Mumbai,
IUAC New Delhi and VECC Kolkata.
The work undertaken is designed to address several key questions in the field, such as:
(i) What are the excitation modes in nuclei at low and high spin.
(ii) How collectivity is developed in nuclei
(iii) Particle alignments and shape coexistence
(iv) Generation of angular momentum in nuclei and band termination
(v) Dynamics of magnetic and Anti-magnetic rotation
(vi) Octupole correlation
(vii) Chiral rotation
We are also involved in simulation of Muon Chamber (MUCH) detectors which will
be used to track muons in the forthcoming Compressed Baryonic Matter (CBM) experiment at GSI Germany.
The goal of the CBM experiment is to explore the phase diagram of strongly interacting matter in the region of
high baryon densities. This approach offers the possibility to find signatures of partonic degrees of-freedom, and
to discover the conjectured first order deconfinement phase transition and its critical endpoint. Another important
goal is the study of in-medium modifications of hadron properties in order to shed light on the phenomenon of chiral
symmetry restoration in dense hadronic and partonic matter.
Evidence for Second-Phonon Nuclear Wobbling by D.R. Jensen, G.B. Hagemann, I. Hamamoto, S.W. Odegard, B. Herskind, G. Sletten, J.N. Wilson, K. Spohr, H. Huebel, P. Bringel, A. Neusser, G. Schoenwasser, A. K. Singh, W.C. Ma, H. Amro, A. Bracco, S. Leoni, G. Benzoni, A. Maj, C.M. Petrache, G. Lo Bianco, P. Bednarczyk and D. Curien PHYSICAL REVIEW LETTER 89 - (2002)
One- two- phonon wobbling excitations in triaxial 165Lu. by G. Schoenwasser, H. Huebel, G.B. Hagemann, P. Bednarczyk, G. Benzoni, G. Lo Bianco, A. Bracco, P. Bringel, R. CHapman, D. Curien, J. Domscheit, B. Herskind, D.R. Jensen, S. Leoni, W.C. Ma, A. Maj, A. Neu\ss er, S.W. Odegard, C.M. Petrache, D. Ro\ss bach, H. Ryde, K.H. Spohr and A.K. Singh PHYSICS LETTER B 552 - (2003)
Relativistic Coulomb excitation of neutron-rich 54,56,58Cr: On the pathway of magicity from N=40 to N = 32,34 by A. Buerger, T. Saito, A. Al-Khatib, A. Banu, T. Beck, F. Becker, P. Bednarczyk, G. Benzoni, A. Bracco, P. Bringel, F. Camera, E. Clement, P. Doornenbal, H. Geissel, J. Gerl, M. Gorska, A. Goergen, H. Grawe, J. G rebosz, G. Hammond, M. Hellstroem, H. Huebel, M. Kavatsyuk, O. Kavatsyuk, M. Kmiecik, I. Kojouharov, N. Kurz, R. Lozeva, A. Maj, S. Mandal, B. Million, S. Muralithar, A. Neu\ss er, F. Nowacki, T. Otsuka, Zs. Podoly\'ak, P. Reiter, N. Saito, A. K. Singh, H. Weick, O. Wieland, M. Winkler, C. Wheldon, H.J. Wollersheim PHYSICS LETTER B 622 - (2005)
Excitation energies of superdeformed states in 196Pb: towards a systematic study of the second well in Pb isotopes by A.N. Wilson, A.K. Singh, H. Huebel, A. Korichi, P.M. Davidson, A. Goergen, D. Rossbach, A. Astier, F. Azaiez, D. Bazacco, C. Bourgeois, N. Buforn, P. Byrne, G.D. Dracoulis, F. Hannachi, K. Hauschild, W. Korten, Kroell, G.J. Lane, A. Lopez-Martens, N. Redon, P. Reiter, C. Rossi-Alvarez, G. Schoenwasser, O. Stezowski, and P.G. Thirolf PHYSICAL REVIEW LETTER 95 - (2005)
Highly deformed high-spin band in 125I by Purnima Singh, Somnath Nag, A.K. Singh, H. Huebel, A. Al-Khatib, P. Bringel, C. Engelhardt, A. Neu\ss er-Neffgen, I. Ragnarsson, M.P. Carpenter, R.V.F. Janssens, T.L. Khoo, T. Lauritsen, G.B. Hagemann, C.R. Hansen, B. Herskind, G. Sletten, A. Bracco, F. Camera, G. Benzoni, P. Fallon, R.M. Clark, P. Chowdhury, H. Amro PHYSICAL REVIEW C 84 - (2011)
High-spin rotational bands in 123I by Purnima Singh, A.K. Singh, A. N. Wilson, I. Ragnarsson, H. Huebel, A. Buerger, M. P. Carpenter, S. Chmel, P. Fallon, G. B. Hagemann, B. Herskind, Hoa Ha, R. V. F. Janssens, K. Juhasz, A. Kardan, T. L. Khoo, G. Kondev, A. Korichi, T. Lauritsen, B. M. Nyako, J. Rogers, G. Sletten, J. Timar, and S. Zhu PHYSICAL REVIEW C 86 - (2012)
Shape evolution in 123Cs and 124Ba nuclei by K. Selvakumar, A.K. Singh, Subhashri Das, Purnima Singh, A. Goswami, R. Raut, A. Mukherjee, U. Datta Pramanik, P. Dutta, S. Roy, G. Gangopadhyay, S. Bhowal, S. Muralithar, Rakesh Kumar, R. P. Singh, M. Kumar Raju, Thomas Reddy PHYSICAL REVIEW C 88 - (2013)
Collective and noncollective excitations in 122Te by Somnath Nag, A.K. Singh, I. Ragnarsson, H. Huebel, A. Al-Khatib, P. Bringel, C. Engelhardt, A. Neu\ss er-Neffgen, G.B. Hagemann, B. Herskind, G. Sletten, M.P. Carpenter, R.V.F. Janssens, T.L. Khoo, T. Lauritsen, R.M. Clark, P. Fallon, G. Benzoni, A. Bracco, F. Camera, P. Chowdhury PHYSICAL REVIEW C 88 - (2013)
Evidence for octupole correlations and chiral symmetry breaking in 124Cs by K. Selvakumar, A. K. Singh, Chandan Ghosh, Purnima Singh, A. Goswami, R. Raut, A. Mukherjee, U. Datta, P. Datta, S. Roy, G. Gangopadhyay, S. Bhowal, S. Muralithar, Rakesh Kumar, R. P. Singh and M. Kumar Raju PHYSICAL REVIEW C 92 - (2015)
Study of Astrophysical Sources in Very High Energy Regime Using Ground Based Gamma - Ray & Neutrino Telescopes Science and Engineering Research Board (SERB)
Area of Research: Nuclear Structure