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155 results on '"Dasmahapatra, B."'

1. Fusion cross sections for 6,7Li + 24Mg reactions at energies below and above the barrier

Author

Ray, M., Mukherjee, A., Pradhan, M. K., Kshetri, Ritesh, Sarkar, M. Saha, Palit, R., Majumdar, I., Joshi, P. K., Jain, H. C., and Dasmahapatra, B.

Subjects
Nuclear Experiment
Abstract

Measurement of fusion cross sections for the 6,7Li + 24Mg reactions by the characteristic gamma-ray method has been done at energies from below to well above the respective Coulomb barriers. The fusion cross sections obtained from these gamma-ray cross sections for the two systems are found to agree well with the total reaction cross sections at low energies. The decrease of fusion cross sections with increase of energy is consistent with the fact that other channels, in particular breakup open up with increase of bombarding energy. This shows that there is neither inhibition nor enhancement of fusion cross sections for these systems at above or below the barrier. The critical angular momenta (lcr) deduced from the fusion cross sections are found to have an energy dependence similar to other Li - induced reactions., Comment: 1 .pdf file

Published
2008
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2. Influence of projectile <alpha>- breakup threshold on complete fusion

Author

Mukherjee, A., Roy, Subinit, Pradhan, M. K., Sarkar, M. Saha, Basu, P., Dasmahapatra, B., Bhattacharya, T., Bhattacharya, S., Basu, S. K., Chatterjee, A., Tripathi, V., and Kailas, S.

Subjects
Nuclear Experiment
Abstract

Complete fusion excitations for 11,10B+159Tb have been measured at energies around the respective Coulomb barriers, and the existing complete fusion measurements for 7Li+159Tb have been extended to higher energies. The measurements show significant reduction of complete fusion cross sections at above-barrier energies for both the reactions, 10B+159Tb and 7Li+159Tb, when compared to those for 11B+159Tb. The comparison shows that the extent of suppression of complete fusion cross sections is correlated with the -separation energies of the projectiles. Also, the two reactions, 10B+159Tb and 7Li+159Tb were found to produce incomplete fusion products at energies near the respective Coulomb barriers, with the - particle emitting channel being the favoured incomplete fusion process in both the cases., Comment: 10 pages, 4 figures To be published in Phys. Letts. B

Published
2006
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3. Absence of M2 Retardation in $^{35}Cl$: Evidence for Stronger Isospin-Mixing Effects in A=35 Mirror Nuclei

Author

Kshetri, Ritesh, Ray, Indrani, Banerjee, P., Raut, R., Goswami, A., Chatterjee, J. M., Chattopadhyay, S., Pramanik, U. Datta, Mukherjee, A., Dey, C. C., Bhattacharya, S., Dasmahapatra, B., Sarkar, M. Saha, Sarkar, S., Bhowal, S., Ganguly, G., Golda, K. S., Kumar, R., Singh, R. P., Muralithar, S., Rao, P. V. Madhusudhana, Madhavan, N., Das, J. J., Nath, S., Sugathan, P., Jhingan, A., Bhowmik, R. K., Datta, P., Joshi, P. K., and Jain, H. C.

Subjects
Nuclear Experiment
Abstract

The lifetime of the 3163 keV, 7/2$^-$ isomeric state in $^{35}Cl$ that decays by a stretched M2 transition to the $3/2^+$ ground state, has been re-measured using the Doppler Shift Attenuation Method, by gating on the 1185 keV transition which directly feeds this state. This eliminates the uncertainties in the measurement arising from the direct feedings from the continuum. A mean life of 0.6$^{+0.5}_{-0.2}$ ps has been obtained from the present work. This is considerably smaller than the adopted value 45.3(6) ps. Implication of this major reduction in the lifetime has been pointed out., Comment: To be published in the Proc. of International Workshop on Nuclear Structure Physics at the Extremes: New Directions (NUSPE 05), 21-24 March, 2005, Shimla India

Published
2005

4. High spin structure of 35Cl and the sd– fp shell gap

Author

Kshetri, Ritesh, Saha Sarkar, M., Ray, Indrani, Banerjee, P., Sarkar, S., Raut, Rajarshi, Goswami, A., Chatterjee, J.M., Chattopadhyay, S., Datta Pramanik, U., Mukherjee, A., Dey, C.C., Bhattacharya, S., Dasmahapatra, B., Bhowal, Samit, Gangopadhyay, G., Datta, P., Jain, H.C., Bhowmik, R.K., Muralithar, S., Singh, R.P., and Kumar, R.

Published
2007
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5. Study of yrast band in 155Tm

Author

Raut, R., Bhowal, S., Ganguly, S., Kshetri, R., Banerjee, P., Bhattacharya, S., Bhowmik, R.K., Dasmahapatra, B., Gangopadhyay, G., Mukherjee, A., Muralithar, S., SahaSarkar, M., Singh, R.P., and Goswami, A.

Published
2007
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7. Effect of breakup coupling on fusion for 6,7Li+24Mg systems

Author

Pradhan M. K., Mukherjee A., and Dasmahapatra B.

Subjects
Physics, QC1-999
Abstract

To study the effect of breakup coupling on fusion we have derived fusion cross sections in the framework of continuum discretised coupled channels (CDCC) method using the coupled channels code FRESCO for the systems 6,7Li+24Mg. The CDCC predicted fusion cross sections for the 7Li+24Mg system agree well with the experimental fusion data whereas for the 6Li+24Mg system the agreement is reasonable at below barrier energies. However, within the limits of the present work no definite conclusion could be obtained from the quality of agreement at above barrier energies for the 6Li+24Mg system.

Published
2015
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8. Level structure of odd-odd 68Ga

Author

Singh, A.K., Gangopadhyay, G., Banerjee, D., Bhattacharya, R., Bhowmik, R.K., Muralithar, S., Singh, R.P., Goswami, A., Bhattacharya, S., Dasmahapatra, B., and Sen, S.

Published
2000
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11. Band structure in104Ag

Author

Goswami, A., Saha Sarkar, M., Datta Pramanik, U., Banerjee, P., Basu, P., Bhattacharya, P., Bhattacharya, S., Chatterjee, M. L., Sen, S., and Dasmahapatra, B.

Published
1995
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12. Rotational band in111Sn

Author

Gangopadhyay, G., Singh, A. K., Banerjee, D., Bhattacharya, R., Bhowmik, R. K., Muralithar, S., Rodrigues, G., Singh, R. P., Goswami, A., Bhattacharya, S., Dasmahapatra, B., and Sen, S.

Published
1995
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16. Influence of projectile - breakup threshold on complete fusion

Author

Mukherjee, A., Roy, Subinit, Pradhan, M. K., Sarkar, M. Saha, Basu, P., Dasmahapatra, B., Bhattacharya, T., Bhattacharya, S., Basu, S. K., Chatterjee, A., Tripathi, V., and Kailas, S.

Subjects
FOS: Physical sciences, Nuclear Experiment (nucl-ex)
Abstract

Complete fusion excitations for 11,10B+159Tb have been measured at energies around the respective Coulomb barriers, and the existing complete fusion measurements for 7Li+159Tb have been extended to higher energies. The measurements show significant reduction of complete fusion cross sections at above-barrier energies for both the reactions, 10B+159Tb and 7Li+159Tb, when compared to those for 11B+159Tb. The comparison shows that the extent of suppression of complete fusion cross sections is correlated with the -separation energies of the projectiles. Also, the two reactions, 10B+159Tb and 7Li+159Tb were found to produce incomplete fusion products at energies near the respective Coulomb barriers, with the - particle emitting channel being the favoured incomplete fusion process in both the cases., 10 pages, 4 figures To be published in Phys. Letts. B

Published
2006
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17. Effect of breakup coupling on fusion for 6,7Li+24Mg systems.

Author

Pradhan, M. K., Mukherjee, A., and Dasmahapatra, B.

Subjects
NUCLEAR fusion, NUCLEAR reactions, LITHIUM, MAGNESIUM, COLLISIONS (Nuclear physics)
Abstract

To study the effect of breakup coupling on fusion we have derived fusion cross sections in the framework of continuum discretised coupled channels (CDCC) method using the coupled channels code FRESCO for the systems 6,7Li+24Mg. The CDCC predicted fusion cross sections for the 7Li+24Mg system agree well with the experimental fusion data whereas for the 6Li+24Mg system the agreement is reasonable at below barrier energies. However, within the limits of the present work no definite conclusion could be obtained from the quality of agreement at above barrier energies for the 6Li+24Mg system. [ABSTRACT FROM AUTHOR]

Published
2015
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23. Indication of the onset of collectivity inP30

Author

Ray, Indrani, primary, Basu, Moumita Roy, additional, Kshetri, Ritesh, additional, Saha Sarkar, Maitreyee, additional, Sarkar, S., additional, Banerjee, P., additional, Chattopadhyay, S., additional, Dey, C. C., additional, Goswami, A., additional, Chatterjee, J. M., additional, Mukherjee, A., additional, Bhattacharya, S., additional, Dasmahapatra, B., additional, Datta, P., additional, Jain, H. C., additional, Bhowmik, R. K., additional, Muralithar, S., additional, and Singh, R. P., additional

Published
2007
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24. Fusion cross sections forLi7+O16at energies above barrier

Author

Ray, M., primary, Mukherjee, A., additional, Saha Sarkar, M., additional, Goswami, A., additional, Roy, S., additional, Saha, S., additional, Bhattacharya, R., additional, Behera, B. R., additional, Datta, S. K., additional, and Dasmahapatra, B., additional

Published
2003
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25. Characteristics of a Compton suppressed Clover detector up to 5

Author

Saha Sarkar, M, primary, Datta, P, additional, Ray, I, additional, Dey, C.C, additional, Chattopadhyay, S, additional, Goswami, A, additional, Banerjee, P, additional, Singh, R.P, additional, Joshi, P.K, additional, Paul, S.D, additional, Bhattacharya, S, additional, Bhowmik, R, additional, Chatterjee, J.M, additional, Jain, H.C, additional, Sen, S, additional, and Dasmahapatra, B, additional

Published
2002
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27. Level structure of the odd-odd62Cuisotope

Author

Singh, A. K., primary, Gangopadhyay, G., additional, Banerjee, D., additional, Bhattacharya, R., additional, Bhowmik, R. K., additional, Muralithar, S., additional, Singh, R. P., additional, Mukherjee, A., additional, Pramanik, U. Datta, additional, Goswami, A., additional, Chattopadhyay, S., additional, Bhattacharya, S., additional, Dasmahapatra, B., additional, and Sen, S., additional

Published
1999
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28. Inverstigation of and reactions at low energies

Author

Mukherjee, A., primary, Datta Pramanik, U., additional, Chattopadhyay, S., additional, Saha Sarkar, M., additional, Goswami, A., additional, Basu, P., additional, Bhattacharya, S., additional, Chatterjee, M.L., additional, and Dasmahapatra, B., additional

Published
1999
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29. Oblate bands in doubly odd 134La

Author

Pramanik, U.Datta, primary, Mukherjee, A., additional, Basu, P., additional, Chattopadhyay, S., additional, Goswami, A., additional, Sarkar, M.Saha, additional, Dasmahapatra, B., additional, Chatterjee, M.L., additional, Sen, S., additional, and Bhattacharya, S., additional

Published
1998
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30. Nuclear structure of

Author

Sarkar, M Saha, primary, Goswami, A, additional, Bhattacharya, S, additional, Dasmahapatra, B, additional, Bhattacharya, P, additional, Basu, P, additional, Chatterjee, M L, additional, and Sen, S, additional

Published
1998
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32. High spin states in63Zn

Author

Singh, A. K., primary, Gangopadhyay, G., additional, Banerjee, D., additional, Bhattacharya, R., additional, Bhowmik, R. K., additional, Muralithar, S., additional, Singh, R. P., additional, Mukherjee, A., additional, Datta Pramanik, U., additional, Goswami, A., additional, Chattopadhyay, S., additional, Bhattacharya, S., additional, Dasmahapatra, B., additional, and Sen, S., additional

Published
1998
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33. Rotational bands in the doubly odd 138Pm

Author

Datta Pramanik, U., primary, Mukherjee, Anjali, additional, Singh, A.K., additional, Chattopadhyay, S., additional, Gangopadhyay, G., additional, Goswami, A., additional, Saha Sarkar, M., additional, Bhowmik, R.K., additional, Singh, R.P., additional, Muralithar, S., additional, Dasmahapatra, B., additional, Sen, S., additional, and Bhattacharya, S., additional

Published
1998
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34. Observation of a deformed band in98Rh

Author

Chattopadhyay, S., primary, Mukherjee, A., additional, Datta Pramanik, U., additional, Goswami, A., additional, Bhattacharya, S., additional, Dasmahapatra, B., additional, Sen, S., additional, Jain, H. C., additional, and Joshi, P. K., additional

Published
1998
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35. Shape of the nucleus

Author

Sarkar, M Saha, primary, Goswami, A, additional, Bhattacharya, S, additional, Dasmahapatra, B, additional, Bhattacharya, P, additional, Basu, P, additional, Chatterjee, M L, additional, and Sen, S, additional

Published
1997
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37. High-spin structures in 112Sb

Author

Singh, A.K., primary, Gangopadhyay, G., additional, Banerjee, D., additional, Bhattacharya, R., additional, Bhowmik, R.K., additional, Muralithar, S., additional, Rodrigues, G., additional, Singh, R.P., additional, Goswami, A., additional, Chattopadhyay, S., additional, Bhattacharya, S., additional, Dasmahapatra, B., additional, and Sen, S., additional

Published
1996
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43. Band structure inRu95

Author

Goswami, A., primary, Saha, M., additional, Bhattacharya, S., additional, Dasmahapatra, B., additional, Basu, P., additional, Bhattacharya, P., additional, Chatterjee, M. L., additional, Banerjee, P., additional, and Sen, S., additional

Published
1990
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47. Level structure of odd-odd 68Ga.

Author

Singh, A.K., Gangopadhyay, G., Banerjee, D., Bhattacharya, R., Bhowmik, R.K., Muralithar, S., Singh, R.P., Goswami, A., Bhattacharya, S., Dasmahapatra, B., and Sen, S.

Abstract

Excited states of 68Ga have been investigated through the 55Mn(16O, 2pn) reaction at projectile energy 55 MeV. The level scheme has been extended up to 7.8 MeV. Altogether six new excited levels could be identified and twelve previously unobserved γ-transitions have been placed in the modified level scheme. [ABSTRACT FROM AUTHOR]

Published
2000
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48. TheC+C Resonances between E = 4.5 and 6 MeV.

Author

Dasmahapatra, B., Čujec, B., and Lahlou, F.

Abstract

From the total γ-ray yield measurements the resonances at E = 4.80, 5.25 and 5.40 (± 0.02) MeV have been observed in addition to the well-established resonances at 4.59, 4.89, 5.02 and 5.65 (± 0.01) MeV. From the angular-distribution measurements of α-particles, leavingNe in the ground state, the J value of the 5.25 MeV resonance appears to be 4. [ABSTRACT FROM AUTHOR]

Published
1982
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