Frequency-selective harmonic retrieval for Schottky mass spectrometry

doi:10.1103/PhysRevE.101.053310

	Frequency-selective harmonic retrieval for Schottky mass spectrometry
	Chen, Xiangcheng
刊名	PHYSICAL REVIEW E
	2020-05-26
卷号	101 期号:5 页码:8
ISSN号	1539-3755
DOI	10.1103/PhysRevE.101.053310
通讯作者	Chen, Xiangcheng(cxc@impcas.ac.cn)
英文摘要	Nuclear mass measurements by means of Schottky mass spectrometry critically rely on an accurate determination of revolution frequencies of the circulating ions in a storage ring. Such a harmonic retrieval problem is conventionally tackled via the periodogram of the Schottky data, where the ion peaks are identified and their spectral locations are obtained by fittings. However, the discrete frequency grid of the periodogram has unfortunately hampered a fine resolution of two closely spaced harmonics. We thereby propose a method based on the state space representation in the frequency domain to overcome this limit. Moreover, its frequency-selective merit has allowed the method to focus only on a narrow band and thus greatly reduced the computational cost while still retaining superb accuracy. With the real Schottky data from an isochronous-Schottky beam time at the experimental cooler-storage ring in Lanzhou, the accuracy of the retrieved harmonics is demonstrated to be around 1 ppm, as limited by the anisochronism effect of the ion optics.
WOS关键词	LIFETIME MEASUREMENTS ; PROJECTILE FRAGMENTS ; EXOTIC NUCLEI ; STORAGE-RING ; IDENTIFICATION ; SYSTEM ; RANGE
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000535461000018
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/140866]
专题	中国科学院近代物理研究所
通讯作者	Chen, Xiangcheng
作者单位	Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, Xiangcheng. Frequency-selective harmonic retrieval for Schottky mass spectrometry[J]. PHYSICAL REVIEW E,2020,101(5):8.
APA	Chen, Xiangcheng.(2020).Frequency-selective harmonic retrieval for Schottky mass spectrometry.PHYSICAL REVIEW E,101(5),8.
MLA	Chen, Xiangcheng."Frequency-selective harmonic retrieval for Schottky mass spectrometry".PHYSICAL REVIEW E 101.5(2020):8.