alpha-decay-correlated mass measurement of Ra-206,Ra-207g,Ra-m using an alpha-TOF detector equipped multireflection time-of-flight mass spectrograph system

doi:10.1103/PhysRevC.104.044617

	alpha-decay-correlated mass measurement of Ra-206,Ra-207g,Ra-m using an alpha-TOF detector equipped multireflection time-of-flight mass spectrograph system
	Niwase, T.7,8,9; Wada, M.7; Schury, P.7; Brionnet, P.8; Chen, S. D.7,10; Hashimoto, T.1; Haba, H.8; Hirayama, Y.7; Hou, D. S.2,3,4; Iimura, S.5,7,8
刊名	PHYSICAL REVIEW C
	2021-10-20
卷号	104 期号:4 页码:8
ISSN号	2469-9985
DOI	10.1103/PhysRevC.104.044617
通讯作者	Niwase, T.(tniwase@post.kek.jp)
英文摘要	The atomic masses of the isotopes Ra-206,Ra-207 have been measured via decay-correlated mass spectroscopy using a multireflection time-of-flight mass spectrograph equipped with an alpha-TOF detector. The Ra isotopes were produced as fusion-evaporation products in the V-51 + Tb-159 reaction system and delivered by the gas-filled recoil ion separator GARIS-II at RIKEN. The alpha-TOF detector provides for high-accuracy mass measurements by correlating time-of-flight signals with subsequent alpha-decay events. The masses of Ra-206 and (207)g,mRa were directly measured using a multireflection time-of-flight mass spectrograph equipped with an alpha-TOF detector. The mass excesses of (206,207)gRa and the excitation energy of Ra-207m were determined to be ME = 3540(50) keV/c(2), 3538(15) keV/c(2), and Eex = 552(42) keV, respectively. The alpha-decay branching ratio of 207mRa, b alpha = 0.26(20), was directly determined from decay-correlated time-of-flight signals, and the reduced alpha width of (207)mRa was calculated to be 82 = 43+68 -34 keV from the branching ratio. The spin-parity of (207)mRa was confirmed to be J(pi) = 13/2(-) from decay correlated mass measurement results.
资助项目	Japan Society for the Promotion of Science KAKENHI[17H06090] ; Japan Society for the Promotion of Science KAKENHI[19K03899] ; Japan Society for the Promotion of Science KAKENHI[21J00670]
WOS关键词	NUCLEAR-DATA SHEETS ; TRAP ; SPECTROSCOPY ; ISOTOPES ; TARGET
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000711198200003
资助机构	Japan Society for the Promotion of Science KAKENHI
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136088]
专题	中国科学院近代物理研究所
通讯作者	Niwase, T.
作者单位	1.Inst for Basic Sci Korea, 70 Yuseong Daero 1689 Gil, Daejeon, South Korea 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 4.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 5.Osaka Univ, Dept Phys, Osaka 5650871, Japan 6.Yamagata Univ, Grad Sch Sci & Engn, Yamagata 9908560, Japan 7.KEK Wako Nucl Sci Ctr, Wako, Saitama 3510198, Japan 8.RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan 9.Kyushu Univ, Dept Phys, Nishi Ku, Fukuoka 8190395, Japan 10.Univ Hong Kong, Dept Phys, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Niwase, T.,Wada, M.,Schury, P.,et al. alpha-decay-correlated mass measurement of Ra-206,Ra-207g,Ra-m using an alpha-TOF detector equipped multireflection time-of-flight mass spectrograph system[J]. PHYSICAL REVIEW C,2021,104(4):8.
APA	Niwase, T..,Wada, M..,Schury, P..,Brionnet, P..,Chen, S. D..,...&Yan, S. X..(2021).alpha-decay-correlated mass measurement of Ra-206,Ra-207g,Ra-m using an alpha-TOF detector equipped multireflection time-of-flight mass spectrograph system.PHYSICAL REVIEW C,104(4),8.
MLA	Niwase, T.,et al."alpha-decay-correlated mass measurement of Ra-206,Ra-207g,Ra-m using an alpha-TOF detector equipped multireflection time-of-flight mass spectrograph system".PHYSICAL REVIEW C 104.4(2021):8.