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Rotational bands in 249 Md

Appleton, C. J. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000261427249)·Clark, R. M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0009000587782977)·Morse, C. [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0009000013667347)·Seweryniak, D. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0009000330289693)·Armstrong, M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0009000384404271)·Bequet, J. [CEA Paris-Saclay, Gif sur Yvette (France)] (ORCID:0009000018009095)·Burns, C. [University of Massachusetts, Lowell, MA (United States)]·Campbell, C. M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000335774316)·Chemey, A. T. [Oregon State University, Corvallis, OR (United States)] (ORCID:0000000206797845)·Chowdhury, P. [University of Massachusetts, Lowell, MA (United States)]·Crawford, H. L. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000277654235)·Cromaz, M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000237662775)·Fallon, P. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0009000426872496)·Garcia-Jiménez, G. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000280596726)·Herzberg, R. D. [University of Liverpool (United Kingdom)] (ORCID:0000000198761518)·Hrabar, Y. [Lund University (Sweden)] (ORCID:0000000231941001)·Huang, T. [Argonne National Laboratory (ANL), Argonne, IL (United States); Chinese Academy of Sciences (CAS), Lanzhou (China)]·Karayonchev, V. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000264970175)·Kondev, F. G. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000295675785)·Korichi, A. [Argonne National Laboratory (ANL), Argonne, IL (United States); CNRS/IN2P3 (France)]·Lauritsen, T. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000295600388)·McGovern, P. [Argonne National Laboratory (ANL), Argonne, IL (United States); University of Connecticut, Storrs, CT (United States)] (ORCID:0000000203387293)·Müller-Gatermann, C. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000291815568)·Porzio, C. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); CERN-ISOLDE, Geneva (Switzerland)] (ORCID:000000024855784X)·Potterveld, D. H. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000263437854)·Reviol, W. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000253727743)·Rice, E. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000157047430)·Rudolph, D. [Lund University (Sweden)] (ORCID:0000000311993055)·Sarmiento, L. G. [Lund University (Sweden)] (ORCID:0000000176002772)·Siciliano, M. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000245980298)·Sidhu, R. S. [University of Surrey, Guildford (United Kingdom)] (ORCID:0000000216377502)·Wahid, S. G. [University of Massachusetts, Lowell, MA (United States)]
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Abstract

Rotational structures in 249 Md have been observed for the first time. One set of states forms a pair of strongly coupled bands with relatively strong E2 transitions and no identifiable M1 transitions between the two signature partners. Another set of states suggests a decoupled sequence of E2 transitions. Furthermore, these bands are assigned as based on the 7/2 − [514] and on the favored signature of the 1/2 - [521] Nilsson level, respectively. Based on previous decay studies, these levels are thought to be the ground state and first excited state of 249 Md, which also agrees with theoretical predictions.

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73 NUCLEAR PHYSICS AND RADIATION PHYSICSA ≥ 220Alpha decayCollective levelsElectromagnetic transitionsIsomer decaysNuclear structure & decays

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Appleton, C. J. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000261427249), Clark, R. M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0009000587782977), Morse, C. [Brookhaven National Laboratory (BNL), Upton, NY (United States)] (ORCID:0009000013667347), Seweryniak, D. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0009000330289693), Armstrong, M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0009000384404271), Bequet, J. [CEA Paris-Saclay, Gif sur Yvette (France)] (ORCID:0009000018009095), Burns, C. [University of Massachusetts, Lowell, MA (United States)], Campbell, C. M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000335774316), Chemey, A. T. [Oregon State University, Corvallis, OR (United States)] (ORCID:0000000206797845), Chowdhury, P. [University of Massachusetts, Lowell, MA (United States)], Crawford, H. L. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000277654235), Cromaz, M. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000237662775), Fallon, P. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0009000426872496), Garcia-Jiménez, G. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000280596726), Herzberg, R. D. [University of Liverpool (United Kingdom)] (ORCID:0000000198761518), Hrabar, Y. [Lund University (Sweden)] (ORCID:0000000231941001), Huang, T. [Argonne National Laboratory (ANL), Argonne, IL (United States); Chinese Academy of Sciences (CAS), Lanzhou (China)], Karayonchev, V. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000264970175), Kondev, F. G. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000295675785), Korichi, A. [Argonne National Laboratory (ANL), Argonne, IL (United States); CNRS/IN2P3 (France)], Lauritsen, T. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000295600388), McGovern, P. [Argonne National Laboratory (ANL), Argonne, IL (United States); University of Connecticut, Storrs, CT (United States)] (ORCID:0000000203387293), Müller-Gatermann, C. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000291815568), Porzio, C. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); CERN-ISOLDE, Geneva (Switzerland)] (ORCID:000000024855784X), Potterveld, D. H. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000263437854), Reviol, W. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000253727743), Rice, E. [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)] (ORCID:0000000157047430), Rudolph, D. [Lund University (Sweden)] (ORCID:0000000311993055), Sarmiento, L. G. [Lund University (Sweden)] (ORCID:0000000176002772), Siciliano, M. [Argonne National Laboratory (ANL), Argonne, IL (United States)] (ORCID:0000000245980298), Sidhu, R. S. [University of Surrey, Guildford (United Kingdom)] (ORCID:0000000216377502), Wahid, S. G. [University of Massachusetts, Lowell, MA (United States)]. 2025-12-10. Rotational bands in 249 Md. https://doi.org/10.1103/c5zn-xn9j

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