干旱区生态环境知识资源中心(Arid): Beta-delayed proton decay in the lanthanide region

Arid

DOI	10.2172/5801478
报告编号	LBL-23929; CONF-870970-8
来源ID	OSTI_ID: 5801478
	Beta-delayed proton decay in the lanthanide region
	Nitschke, J.M.; Wilmarth, P.A.; Gilat, J.; Moeller, P.; Toth, K.S.
英文摘要	A total of 24 new ..beta..-delayed proton precursors and several new decay branches in the region of 56 < Z < 72 and N < 82 have been identified with the OASIS on-line mass separator facility at the SuperHILAC in Berkeley. Proton spectra and halflives were measured for all precursors. Additional properties determined for many of the isotopes include spins and parities of the precursors, final state feedings, proton branching ratios, (Q/sub EC/-S/sub p/) energy differences, and new levels in the proton decay daughters. Mixed ..beta..-delayed proton decay from precursor isomers and ground states has been observed. The proton decay has been compared to statistical model calculations using Gamow-Teller (GT) ..beta..-strength functions obtained from RPA calculations with Nilsson model wave functions. For the N = 81 precursors /sup 151/Yb, /sup 149/Er, and /sup 147/Dy, pronounced structure in the proton spectra has been observed. An interpretation of this structure in the framework of ''doorway'' states is proposed. 25 refs., 6 figs., 1 tab.
出版年	1987
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	73 NUCLEAR PHYSICS AND RADIATION PHYSICS ; PROTON DECAY RADIOISOTOPES ; BETA DECAY ; PROTON EMISSION DECAY ; ANGULAR MOMENTUM ; BRANCHING RATIO ; ENERGY RANGE ; EXPERIMENTAL DATA ; HALF-LIFE ; PROTON SPECTRA ; SHELL MODELS ; TRANSITION AMPLITUDES ; AMPLITUDES ; DATA ; DECAY ; INFORMATION ; ISOTOPES ; MATHEMATICAL MODELS ; NUCLEAR MODELS ; NUMERICAL DATA ; RADIOISOTOPES ; SPECTRA 653005* -- Nuclear Theory-- Radioactive Decay ; 651520 -- Nuclear Properties & Reactions, A=39-58, Experimental ; 651620 -- Nuclear Properties & Reactions, A=59-89, Experimental
URL	http://www.osti.gov/scitech/servlets/purl/5801478
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/263945
推荐引用方式 GB/T 7714	Nitschke, J.M.,Wilmarth, P.A.,Gilat, J.,et al. Beta-delayed proton decay in the lanthanide region,1987.