First observation of high-K isomeric states in 249Md and 251Md
Goigoux, T., Theisen, Ch., Sulignano, B., Airiau, M., Auranen, K., Badran, H., Briselet, R., Calverley, T., Cox, D., Déchery, F., Defranchi Bisso, F., Drouart, A., Favier, Z., Gall, B., Grahn, T., Greenlees, P. T., Hauschild, K., Herzáň, A., Herzberg, R.-D., . . . Skalski, J. (2021). First observation of high-K isomeric states in 249Md and 251Md. European Physical Journal A, 57(12), Article 321. https://doi.org/10.1140/epja/s10050-021-00631-4
Published inEuropean Physical Journal A
Cox, D. |
Gall, B. |
Ward, A. |
DisciplineFysiikkaYdin- ja kiihdytinfysiikan huippuyksikköPhysicsCentre of Excellence in Nuclear and Accelerator Based Physics
© 2021 the Authors
Decay spectroscopy of the odd-proton nuclei 249Md and 251Md has been performed. High-K isomeric states were identified for the first time in these two nuclei through the measurement of their electromagnetic decay. An isomeric state with a half-life of 2.8(5) ms and an excitation energy ≥910 keV was found in 249Md. In 251Md, an isomeric state with a half-life of 1.4(3) s and an excitation energy ≥844 keV was found. Similarly to the neighbouring 255Lr, these two isomeric states are interpreted as 3 quasi-particle high-K states and compared to new theoretical calculations. Excited nuclear configurations were calculated within two scenarios: via blocking nuclear states located in proximity to the Fermi surface or/and using the quasiparticle Bardeen–Cooper–Schrieffer method. Relevant states were selected on the basis of the microscopic-macroscopic model with a deformed Woods–Saxon potential. The most probable candidates for the configurations of K-isomeric states in Md nuclei are proposed.
PublisherSpringer Science and Business Media LLC
ISSN Search the Publication Forum1434-6001
Publication in research information system
MetadataShow full item record
Additional information about fundingSupport has been provided by the EU 7th Framework Programme “Integrating Activities - Transnational Access” Project no. 262010 (ENSAR), by the Academy of Finland under the Finnish Centre of Excellence Programme (Nuclear and Accelerator Based Physics Programme at JYFL; contract 213503), and by the UK STFC. A. H. would like to thank the Slovak Research and Development Agency under contract no. APVV-15-0225, and Slovak grant agency VEGA (contract no. 2/0067/21). This work was also supported by the Research and Development Operational Programme funded by the European Regional Development Fund, project no. ITMS code 26210120023. M. K. was co-financed by the National Science Centre under Contract no. UMO-2013/08/M/ST2/00257 (LEA COPIGAL). ...
Showing items with similar title or keywords.
New β-decaying state in 214Bi Andel, B.; Van Duppen, P.; Andreyev, A. N.; Blazhev, A.; Grawe, H.; Lică, R.; Naïdja, H.; Stryjczyk, Marek; Algora, A.; Antalic, S.; Barzakh, A.; Benito, J.; Benzoni, G.; Berry, T.; Borge, M. J. G.; Chrysalidis, K.; Clisu, C.; Costache, C.; Cubiss, J. G.; De Witte, H.; Fedorov, D. V.; Fedosseev, V. N.; Fraile, L. M.; Fynbo, H. O. U.; Greenlees, Paul T.; Harkness-Brennan, L. J.; Huyse, M.; Illana, A.; Jolie, J.; Judson, D. S.; Konki, Joonas; Lazarus, I.; Madurga, M.; Marginean, N.; Marginean, R.; Mihai, C.; Marsh, B. A.; Molkanov, P.; Mosat, P.; Murias, J. R.; Nacher, E.; Negret, A.; Page, R. D.; Pascu, S.; Perea, A.; Pucknell, V.; Rahkila, Panu; Rapisarda, E.; Rezynkina, K.; Sánchez-Tembleque, V.; Schomacker, K.; Seliverstov, M. D.; Sotty, C.; Stan, L.; Sürder, C.; Tengblad, O.; Vedia, V.; Viñals, S.; Wadsworth, R.; Warr, N. (American Physical Society (APS), 2021)A new β-decaying state in 214Bi has been identified at the ISOLDE Decay Station at the CERN-ISOLDE facility. A preferred Iπ = (8−) assignment was suggested for this state based on the β-decay feeding pattern to levels in ...
Prompt and delayed spectroscopy of 203At : Observation of a shears band and a 29/2+ isomeric state Auranen, Kalle; Uusitalo, Juha; Juutinen, Sakari; Badran, Hussam; Bisso, F. Defranchi; Cox, Daniel; Grahn, Tuomas; Greenlees, Paul; Herzan, Andrej; Jakobsson, U.; Julin, Rauno; Konki, Joonas; Leino, Matti; Lightfoot, A.; Mallaburn, M. J.; Neuvonen, O.; Pakarinen, Janne; Papadakis, Philippos; Partanen, Jari; Rahkila, Panu; Sandzelius, Mikael; Sarén, Jan; Scholey, Catherine; Sorri, Juha; Stolze, Sanna; Wang, Y. K. (American Physical Society, 2018)Using fusion-evaporation reactions, a gas-filled recoil separator, recoil-gating technique and recoil-isomer decay tagging technique we have extended the level scheme of 203 At ( N = 118 ) significantly. We have ...
Carboxylate catalyzed isomerization of β,γ‐unsaturated N-acetylcysteamine thioesters Riuttamäki, Saara; Laszkó, Gergely; Madarász, Ádam; Földes, Tamás; Pápai, Imre; Bannykh, Anton; Pihko, Petri M. (Wiley-VCH Verlag, 2022)We demonstrate herein the capacity of simple carboxylate salts – tetrametylammonium and tetramethylguanidinium pivalate – to act as catalysts in the isomerization of β,γ-unsaturated thioesters to α,β-unsaturated thioesters. ...
The Photocycle of Bacteriophytochrome Is Initiated by Counterclockwise Chromophore Isomerization Morozov, Dmitry; Modi, Vaibhav; Mironov, Vladimir; Groenhof, Gerrit (American Chemical Society (ACS), 2022)Photoactivation of bacteriophytochrome involves a cis–trans photoisomerization of a biliverdin chromophore, but neither the precise sequence of events nor the direction of the isomerization is known. Here, we used nonadiabatic ...
Measurement of fission yields and isomeric yield ratios at IGISOL Pomp, Stephan; Mattera, Andrea; Rakopoulos, Vasileios; Al-Adili, Ali; Lantz, Mattias; Solders, Andreas; Jansson, Kaj; Prokofiev, Alexander; Eronen, Tommi; Gorelov, Dmitry; Jokinen, Ari; Kankainen, Anu; Moore, Iain; Penttilä, Heikki; Rinta-Antila, Sami (EDP Sciences, 2018)Data on fission yields and isomeric yield ratios (IYR) are tools to study the fission process, in particular the generation of angular momentum. We use the IGISOL facility with the Penning trap JYFLTRAP in Jyväskylä, ...