Decay spectroscopy of an isomeric state in ²⁵¹Md

Technical Report · Tue Feb 18 04:00:00 EST 2025

DOI:https://doi.org/10.2172/2560740· OSTI ID:2560740

Morse, C. ^[1]; Clark, R. M. ^[2]; Seweryniak, D. ^[3]; Appleton, C. J. ^[2]; Carpenter, M. P. ^[2]

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1. Brookhaven National Laboratory (BNL), Upton, NY (United States)
2. Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
3. Argonne National Laboratory (ANL), Argonne, IL (United States)

Superheavy elements (Z ≥ 104) owe their existence to quantum shell effects which stabilize them against fission. Experimental studies of their structure are challenging, and only recently has direct information begun to emerge. Meanwhile, the comparative ease of producing the transfermium nuclei offers an alternative approach. These nuclei are well-deformed (β2 ≈ 0.28) owing to the existence of deformed gaps in the single particle spectrum near Z = 100 and N = 152. Because of this, the proton orbitals near the Fermi surface in this region are expected to originate from the spherical sub shells which define the shell gaps near Z = 114. In this sense, the transfermium nuclei act as a testing ground for theoretical models used to describe the superheavy region. Deformed odd-mass nuclei are of particular interest since they can provide direct insight into the single particle structure.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: SC0012704
• OSTI ID: 2560740
• Report Number(s): BNL--228037-2025-INRE
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS