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Your search keyword '"Tandel, S. K."' showing total 8 results
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8 results on '"Tandel, S. K."'

1. Studies of multi-quasiparticle K-isomers in rare-earth and trans-fermium nuclei

Author

Kondev, Filip G, Dracoulis, George, Khoo, T, Lane, Gregory, Byrne, Aidan, Kibedi, Tibor, Ahmad, I., Back, B., Carpenter, M P, Janssens, R V F, Lauritsen, T, Lister, C J, Peterson, D., Seweryniak, D, Zhu, S., Chowdhury, P, Tandel, S K, Kondev, Filip G, Dracoulis, George, Khoo, T, Lane, Gregory, Byrne, Aidan, Kibedi, Tibor, Ahmad, I., Back, B., Carpenter, M P, Janssens, R V F, Lauritsen, T, Lister, C J, Peterson, D., Seweryniak, D, Zhu, S., Chowdhury, P, and Tandel, S K

Published
2007

2. Multiple band structures in 169Ta

Author

Hartley, D. J., Mohr, W. H., Vanhoy, J. R., Riley, M. A., Aguilar, A., Teal, C., Janssens, R. V. F., Carpenter, M. P., Hecht, A. A., Lauritsen, T., Moore, E. F., Zhu, S., Kondev, F. G., Djongolov, M. K., Danchev, M., Riedinger, L. L., Hagemann, Gudrun Bertram, Sletten, G., Chowdhury, P., Tandel, S. K., Ma, W. C., Ødegård, S. W., Hartley, D. J., Mohr, W. H., Vanhoy, J. R., Riley, M. A., Aguilar, A., Teal, C., Janssens, R. V. F., Carpenter, M. P., Hecht, A. A., Lauritsen, T., Moore, E. F., Zhu, S., Kondev, F. G., Djongolov, M. K., Danchev, M., Riedinger, L. L., Hagemann, Gudrun Bertram, Sletten, G., Chowdhury, P., Tandel, S. K., Ma, W. C., and Ødegård, S. W.

Abstract

Nuclei, physics, rare-earth nuclei Udgivelsesdato: 28 Nov.

Published
2006

3. Multiple band structures in 169Ta

Author

Hartley, D. J., Mohr, W. H., Vanhoy, J. R., Riley, M. A., Aguilar, A., Teal, C., Janssens, R. V. F., Carpenter, M. P., Hecht, A. A., Lauritsen, T., Moore, E. F., Zhu, S., Kondev, F. G., Djongolov, M. K., Danchev, M., Riedinger, L. L., Hagemann, Gudrun Bertram, Sletten, G., Chowdhury, P., Tandel, S. K., Ma, W. C., Ødegård, S. W., Hartley, D. J., Mohr, W. H., Vanhoy, J. R., Riley, M. A., Aguilar, A., Teal, C., Janssens, R. V. F., Carpenter, M. P., Hecht, A. A., Lauritsen, T., Moore, E. F., Zhu, S., Kondev, F. G., Djongolov, M. K., Danchev, M., Riedinger, L. L., Hagemann, Gudrun Bertram, Sletten, G., Chowdhury, P., Tandel, S. K., Ma, W. C., and Ødegård, S. W.

Abstract

Nuclei, physics, rare-earth nuclei Udgivelsesdato: 28 Nov.

Published
2006

4. Multiple band structures in 169Ta

Author

Hartley, D. J., Mohr, W. H., Vanhoy, J. R., Riley, M. A., Aguilar, A., Teal, C., Janssens, R. V. F., Carpenter, M. P., Hecht, A. A., Lauritsen, T., Moore, E. F., Zhu, S., Kondev, F. G., Djongolov, M. K., Danchev, M., Riedinger, L. L., Hagemann, Gudrun Bertram, Sletten, G., Chowdhury, P., Tandel, S. K., Ma, W. C., Ødegård, S. W., Hartley, D. J., Mohr, W. H., Vanhoy, J. R., Riley, M. A., Aguilar, A., Teal, C., Janssens, R. V. F., Carpenter, M. P., Hecht, A. A., Lauritsen, T., Moore, E. F., Zhu, S., Kondev, F. G., Djongolov, M. K., Danchev, M., Riedinger, L. L., Hagemann, Gudrun Bertram, Sletten, G., Chowdhury, P., Tandel, S. K., Ma, W. C., and Ødegård, S. W.

Abstract

Nuclei, physics, rare-earth nuclei Udgivelsesdato: 28 Nov.

Published
2006

5. Beyond Band Termination in 157 Er and the Search for Wobbling Excitations in Strongly Deformed 174 Hf

Author

Riley, M.A., Djongolov, M.K., Evans, Aaron, Hartley, D J, Janssens, R V F, Paul, E, Simpson, Jane, Aguilar, A. A, Appelbe, D., Bingham, C.R., Campbell, D.B., Carpenter, M P, Chowdhury, P, Choy, P T W, Clark, Robert Graham, Cromaz, M., Cullen, D M, Danchev, M., Dracoulis, George, Fallon, P, Gorgen, A, Hagemann, G B, Joss, D., Goon, J., Kaye, R A, Khoo, T, Kondev, Filip G, Laird, R W, Lagergren, K, Lauritsen, T, Macchiavelli, A O, McClain, B, Moore, E.F., Mukherjee, G, Ngijoi-Yogo, E, Nolan, P, Park, Hyoungshin, Pipidis, A, Riedinger, L L, Sletten, G, Tandel, S K, Walker, Philip M, Ward, D, Ragnarsson, I, Saric, F, Zhang, Jing-ye, Riley, M.A., Djongolov, M.K., Evans, Aaron, Hartley, D J, Janssens, R V F, Paul, E, Simpson, Jane, Aguilar, A. A, Appelbe, D., Bingham, C.R., Campbell, D.B., Carpenter, M P, Chowdhury, P, Choy, P T W, Clark, Robert Graham, Cromaz, M., Cullen, D M, Danchev, M., Dracoulis, George, Fallon, P, Gorgen, A, Hagemann, G B, Joss, D., Goon, J., Kaye, R A, Khoo, T, Kondev, Filip G, Laird, R W, Lagergren, K, Lauritsen, T, Macchiavelli, A O, McClain, B, Moore, E.F., Mukherjee, G, Ngijoi-Yogo, E, Nolan, P, Park, Hyoungshin, Pipidis, A, Riedinger, L L, Sletten, G, Tandel, S K, Walker, Philip M, Ward, D, Ragnarsson, I, Saric, F, and Zhang, Jing-ye

Abstract

High-spin terminating bands in heavy nuclei were first identified in nuclei around 158Er90. While examples of special terminating states have been identified in a number of erbium isotopes, almost nothing is known about the states lying beyond band termination. In the present work the high-spin structure of 157Er has been studied using the Gammasphere spectrometer. The subject of triaxial superdeformation and 'wobbling' modes in Lu nuclei has rightly attracted a great deal of attention. Very recently, four strongly or superdeformed (SD) sequences have been observed in 174Hf and ultimate cranker calculations predict such structures may have significant triaxial deformation. We have performed two experiments in an attempt to verify the possible triaxial nature of these bands. A lifetime measurement was performed to confirm the large (and similar) deformation of the bands. In addition, a high-statistics, thin-target experiment was run to search for linking transitions between the SD bands and possible wobbling modes.

Published
2005

6. Structure of Multi-Quasiparticle Isomers in the Region of 177 Lu

Author

Dracoulis, George, Kondev, Filip G, Lane, Gregory, Byrne, Aidan, Kibedi, Tibor, Ahmad, I., Carpenter, M P, Freeman, S J, Janssens, R V F, Hammond, N.J., Lauritsen, T, Lister, C J, Seweryniak, D, Mukherjee, G, Chowdhury, P, Tandel, S K, Dracoulis, George, Kondev, Filip G, Lane, Gregory, Byrne, Aidan, Kibedi, Tibor, Ahmad, I., Carpenter, M P, Freeman, S J, Janssens, R V F, Hammond, N.J., Lauritsen, T, Lister, C J, Seweryniak, D, Mukherjee, G, Chowdhury, P, and Tandel, S K

Published
2005

7. Wobbling Excitations in Strongly Deformed Hf Nuclei?

Author

Hartley, D J, Djongolov, M.K., Riedinger, L L, Hagemann, G B, Janssens, R V F, Kondev, Filip G, Moore, E.F., Riley, M.A., Aguilar, A.A., Bingham, C.R., Campbell, D.B., Carpenter, M P, Chowdhury, P, Cromaz, M., Cullen, D M, Danchev, M., Dracoulis, George, Fallon, P, Goon, J., Kaye, R A, Khoo, T, Laird, R W, Lauritsen, T, Macchiavelli, A O, McClain, B, Mukherjee, G, Ngijoi-Yogo, E, Park, Hyoungshin, Sletten, G, Tandel, S K, Walker, Philip M, Zhang, Jing-ye, Hartley, D J, Djongolov, M.K., Riedinger, L L, Hagemann, G B, Janssens, R V F, Kondev, Filip G, Moore, E.F., Riley, M.A., Aguilar, A.A., Bingham, C.R., Campbell, D.B., Carpenter, M P, Chowdhury, P, Cromaz, M., Cullen, D M, Danchev, M., Dracoulis, George, Fallon, P, Goon, J., Kaye, R A, Khoo, T, Laird, R W, Lauritsen, T, Macchiavelli, A O, McClain, B, Mukherjee, G, Ngijoi-Yogo, E, Park, Hyoungshin, Sletten, G, Tandel, S K, Walker, Philip M, and Zhang, Jing-ye

Abstract

Two Gammasphere experiments have been performed in order to establish the possible triaxial nature of strongly deformed (SD) bands in174Hf. A lifetime measurement, using the Doppler-shift attenuation method, confirmed the large deformation of the four previously observed bands in this nucleus with transition quadrupole moments ranging from 12.6 to 13.8 b. These values are significantly larger than those predicted for triaxial minima by ultimate cranker (UC) calculations. A thin-target, high-statistics experiment was also carried out to search for linking transitions between the SD bands. No such transitions, which represent an experimental signature for wobbling modes, were observed. Four additional SD bands were found in174Hf together with a single SD band in173Hf. These results indicate that the strongly deformed sequences of N≈102 Hf isotopes behave differently than the triaxial strongly deformed (TSD) bands found in Lu nuclei near N=92. The interpretation of these bands in terms of possible stable triaxial deformation is confronted with the experimental findings and UC predictions.

Published
2005

8. Search for Wobbling Excitations in Hf Nuclei: Are the SD Bands Triaxial?

Author

Hartley, D J, Djongolov, M.K., Riedinger, L L, Hagemann, G B, Janssens, R V F, Kondev, Filip G, Moore, E.F., Aguilar, A.A., Bingham, C.R., Campbell, D.B., Carpenter, M P, Chowdhury, P, Cromaz, M., Cullen, D M, Danchev, M., Dracoulis, George, Fallon, P, Goon, J., Kaye, R A, Laird, R W, Khoo, T, Lauritsen, T, Macchiavelli, A O, McClain, B, Mukherjee, G, Ngijoi-Yogo, E, Sletten, G, Tandel, S K, Walker, Philip M, Zhang, Jing-ye, Riley, M.A., Park, H.I., Hartley, D J, Djongolov, M.K., Riedinger, L L, Hagemann, G B, Janssens, R V F, Kondev, Filip G, Moore, E.F., Aguilar, A.A., Bingham, C.R., Campbell, D.B., Carpenter, M P, Chowdhury, P, Cromaz, M., Cullen, D M, Danchev, M., Dracoulis, George, Fallon, P, Goon, J., Kaye, R A, Laird, R W, Khoo, T, Lauritsen, T, Macchiavelli, A O, McClain, B, Mukherjee, G, Ngijoi-Yogo, E, Sletten, G, Tandel, S K, Walker, Philip M, Zhang, Jing-ye, Riley, M.A., and Park, H.I.

Abstract

Two Gammasphere experiments have been performed in order to establish the possible triaxial nature of strongly deformed (SD) bands in174Hf. A lifetime measurement confirmed the large deformation of the four previously observed bands in this nucleus. In addition, a thin-target, high-statistics experiment was carried out to search for linking transitions between the SD bands. No such transitions, which represent an experimental signature for wobbling modes, were observed. Four new SD bands were found in174Hf together with a single SD band in173Hf. These results indicate that the strongly deformed sequences of N ≈ 102 Hf isotopes behave differently than the TSD bands found in Lu nuclei near N = 92. The interpretation of these bands in terms of possible stable triaxial deformation is confronted with the experimental findings and UC predictions.

Published
2005

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