Zobrazeno 1 - 10
of 51
pro vyhledávání: '"Coombes B. J."'
Autor:
Paulsen, W., Li, K. C. W., Siem, S., Ingeberg, V. W., Larsen, A. C., Eriksen, T. K., Berg, H. C., Bjørøen, M. M., Coombes, B. J., Dowie, J. T. H., Furmyr, F. W., Garrote, F. L. B., Gjestvang, D., Görgen, A., Kibédi, T., Markova, M., Modamio, V., Sahin, E., Stuchbery, A. E, Tveten, G. M., Valsdòttir, V. M.
The radiative branching ratio of the Hoyle state is crucial to estimate the triple-$\alpha$ reaction rate in stellar environments at medium temperatures. Knowledge of the $\gamma$-decay channel is critical as this is the dominant radiative decay chan
Externí odkaz:
http://arxiv.org/abs/2406.00397
Autor:
Chen, J., Kay, B. P., Hoffman, C. R., Tang, T. L., Tolstukhin, I. A., Bazin, D., Lubna, R. S., Ayyad, Y., Beceiro-Novo, S., Coombes, B. J., Freeman, S. J., Gaffney, L. P., Garg, R., Jayatissa, H., Kuchera, A. N., MacGregor, P., Mitchell, A. J., Mittig, W., Monteagudo, B., Munoz-Ramos, A., Müller-Gatermann, C., Recchia, F., Rijal, N., Santamaria, C., Serikow, M. Z., Sharp, D. K., Smith, J., Stecenko, J. K., Wilson, G. L., Wuosmaa, A. H., Yuan, C. X., Zamora, J. C., Zhang, Y. N.
The spin-orbit splitting between neutron 1$p$ orbitals at $^{33}$Si has been deduced using the single-neutron-adding ($d$,$p$) reaction in inverse kinematics with a beam of $^{32}$Si, a long-lived radioisotope. Reaction products were analyzed by the
Externí odkaz:
http://arxiv.org/abs/2404.05434
Autor:
Gray, T. J., Stuchbery, A. E., Dobaczewski, J., Blazhev, A., Alshammari, H. A., Bignell, L. J., Bonnard, J., Coombes, B. J., Dowie, J. T. H., Gerathy, M. S. M., Kibédi, T., Lane, G. J., McCormick, B. P., Mitchell, A. J., Nicholls, C., Pope, J. G., Reinhard, P. -G., Spinks, N. J., Zhong, Y.
The $g$ factors of $11/2^-$ isomers in semimagic $^{109}$Sn and $^{111}$Sn (isomeric lifetimes $\tau = 2.9(3)$ ns and $\tau = 14.4(7)$ ns, respectively) were measured by an extension of the Time Differential Perturbed Angular Distribution technique,
Externí odkaz:
http://arxiv.org/abs/2310.11980
Autor:
Dowie J. T. H., Kibédi T., Stuchbery A. E., Akber A., Avaa A., Bignell L. J., Chisapi M. V., Coombes B. J., Eriksen T. K., Gerathy M. S. M., Gray T. J., Hoang T. H., Ideguchi E., Jones P., Kumar Raju M., Lane G. J., McCormick B. P., Mitchell A. J., Tee B. P. E.
Publikováno v:
EPJ Web of Conferences, Vol 232, p 04004 (2020)
Electric monopole (E0) transitions are a highly sensitive probe of the charge distribution of an atomic nucleus. A large E0 transition strength (ρ2(E0)) is a clear indicator of nuclear shape coexistence. In the region between doubly magic 40Ca and 5
Externí odkaz:
https://doaj.org/article/85e881dfd3134ea9b31b9809200f0c50
Autor:
Coombes B. J., Stuchbery A. E., Allmond J. M., Gargano A., Dowie J. T. H., Georgiev G., Gerathy M. S. M., Gray T. J., Kibédi T., Lane G. J., McCormick B. P., Mitchell A. J., Spinks N. J., Tee B. P. E.
Publikováno v:
EPJ Web of Conferences, Vol 232, p 04003 (2020)
The emergence of nuclear collectivity near doubly-magic 132Sn was explored along the stable, eveneven 124−130Te isotopes. Preliminary measurements of the B(E2; 41+ → 21+) transition strengths are reported from Coulomb excitation experiments prima
Externí odkaz:
https://doaj.org/article/83cc36307eca48d6ba97d154ddd891e6
Autor:
Palazzo, T., Mitchell, A. J., Lane, G. J., Stuchbery, A. E., Brown, B. A., Reed, M. W., Akber, A., Coombes, B. J., Dowie, J. T. H., Eriksen, T. K., Gerathy, M. S. M., Kibédi, T., Tornyi, T., de Vries, M. O.
The only proposed observation of a discrete, hexacontatetrapole ($E6$) transition in nature occurs from the T$_{1/2}$ = 2.54(2)-minute decay of $^{53m}$Fe. However, there are conflicting claims concerning its $\gamma$-decay branching ratio, and a rig
Externí odkaz:
http://arxiv.org/abs/2302.05544
Autor:
Gray, T. J., Stuchbery, A. E., Coombes, B. J., Dowie, J. T. H., Gerathy, M. S. M., Kibedi, T., Lane, G. J., McCormick, B. P., Mitchell, A. J., Reed, M. W.
Publikováno v:
Physical Review C 101, 054302 (2020)
Isomers in $^{66}$Ga, $^{67}$Ge, and $^{69}$Ge were recoil-implanted into ferromagnetic hosts of iron and gadolinium at $\approx 6$~K, and the hyperfine magnetic fields were determined by Time Differential Perturbed Angular Distribution (TDPAD) measu
Externí odkaz:
http://arxiv.org/abs/2206.07294
Autor:
Spinks, N. J., Bignell, L. J., Lane, G. J., Akber, A., Barberio, E., Baroncelli, T., Coombes, B. J., Dowie, J. T. H., Eriksen, T. K., Gerathy, M. S. M., Gray, T. J., Mahmood, I., McCormick, B. P., Melbourne, W. J. D., Mitchell, A. J., Nuti, F., Rahman, M. S., Scutti, F., Stuchbery, A. E., Timmers, H., Urquijo, P., Zhong, Y. Y., Zurowski, M. J.
The scintillation mechanism in NaI:Tl crystals produces different pulse shapes that are dependent on the incoming particle type. The time distribution of scintillation light from nuclear recoil events decays faster than for electron recoil events and
Externí odkaz:
http://arxiv.org/abs/2205.08723
Autor:
Ideguchi, E., Kibédi, T., Dowie, J. T. H., Hoang, T. H., Raju, M. Kumar, Aoi, N., Mitchell, A. J., Stuchbery, A. E., Shimizu, N., Utsuno, Y., Akber, A., Bignell, L. J., Coombes, B. J., Eriksen, T. K., Gray, T. J., Lane, G. J., McCormick, B. P.
The electric monopole ($E0$) transition strength $\rho^2$ for the transition connecting the third 0$^+$ level, a "superdeformed" band head, to the "spherical" 0$^+$ ground state in doubly magic $^{40}$Ca has been determined via $e^+e^-$ pair-conversi
Externí odkaz:
http://arxiv.org/abs/2205.06516
Autor:
Eriksen, T. K., Kibédi, T., Reed, M. W., Stuchbery, A. E., Cook, K. J., Akber, A., Alshahrani, B., Avaa, A. A., Banerjee, K., Berriman, A. C., Bezzina, L. T., Bignell, L., Buete, J., Carter, I. P., Coombes, B. J., Dowie, J. T. H., Dasgupta, M., Evitts, L. J., Garnsworthy, A. B., Gerathy, M. S. M., Gray, T. J., Hinde, D. J., Hoang, T. H., Hota, S. S., Ideguchi, E., Jones, P., Lane, G. J., McCormick, B. P., Mitchell, A. J., Palalani, N., Palazzo, T., Ripper, M., Simpson, E. C., Smallcombe, J., Swinton-Bland, B. M. A., Tanaka, T., Tornyi, T. G., de Vries, M. O.
Stellar carbon synthesis occurs exclusively via the $3\alpha$ process, in which three $\alpha$ particles fuse to form $^{12}$C in the excited Hoyle state, followed by electromagnetic decay to the ground state. The Hoyle state is above the $\alpha$ th
Externí odkaz:
http://arxiv.org/abs/2007.15374