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1. Lifetime measurements of excited states in ¹⁶³W and the implications for the anomalous B(E2) ratios in transitional nuclei

Author

Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., Uusitalo, Juha, Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., and Uusitalo, Juha

Abstract

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:21/2⁺ → 17/2⁺)/B(E2:17/2⁺ → 13/2⁺) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Published
2022

2. Lifetime measurements of excited states in ¹⁶³W and the implications for the anomalous B(E2) ratios in transitional nuclei

Author

Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., Uusitalo, Juha, Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., and Uusitalo, Juha

Abstract

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:21/2⁺ → 17/2⁺)/B(E2:17/2⁺ → 13/2⁺) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Published
2022

3. Lifetime measurements of excited states in ¹⁶³W and the implications for the anomalous B(E2) ratios in transitional nuclei

Author

Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., Uusitalo, Juha, Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., and Uusitalo, Juha

Abstract

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:21/2⁺ → 17/2⁺)/B(E2:17/2⁺ → 13/2⁺) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Published
2022

4. Lifetime measurements of excited states in ¹⁶³W and the implications for the anomalous B(E2) ratios in transitional nuclei

Author

Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., Uusitalo, Juha, Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., and Uusitalo, Juha

Abstract

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:21/2⁺ → 17/2⁺)/B(E2:17/2⁺ → 13/2⁺) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Published
2022

5. Lifetime measurements of excited states in ¹⁶³W and the implications for the anomalous B(E2) ratios in transitional nuclei

Author

Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., Uusitalo, Juha, Lewis, M. C., Joss, D. T., Sayğı, Bahadır, Page, Robert D., Cullen, David M., Barber, L., Giles, Michael, Simpson, John J., Al-Aqeel, M. A. M., Badran, H., Braunroth, Thomas, Briscoe, Andy D., Calverley, T., Dewald, Alfred, Doncel, M., Grahn, Tuomas, Greenlees, Paul, Henrich, Corinna, Herzáň, Andrej, Herzberg, Rolf Dietmar, Higgins, Edward J., Hilton, J., Ilieva, Stoyanka, Julin, Rauno, Juutinen, Sakari, Keatings, James Michael, Kröll, Thorsten, Labiche, Marc A., Mashtakov, Konstantin R., Nara Singh, Bondili S., Parr, Edward J., Partanen, J., Paul, Edward S., Rahkila, Panu M., Sandzelius, M., Sarén, Jan J., Scholey, Cath S., Siciliano, Marco, Spagnoletti, Pietro, Stolze, S. M., Szwec, Stuart V., Taylor, Michael J., and Uusitalo, Juha

Abstract

This letter reports lifetime measurements of excited states in the odd-N nucleus 163W using the recoil-distance Doppler shift method to probe the core polarising effect of the i13/2 neutron orbital on the underlying soft triaxial even-even core. The ratio B(E2:21/2⁺ → 17/2⁺)/B(E2:17/2⁺ → 13/2⁺) is consistent with the predictions of the collective rotational model. The deduced B(E2) values provide insights into the validity of collective model predictions for heavy transitional nuclei and a geometric origin for the anomalous B(E2) ratios observed in nearby even-even nuclei is proposed.

Published
2022

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