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Titolo:
Research of the capillary target-ion source system in on-line experiment
Autore:
Zhao, ZZ; Yang, YF; Wang, TQ; Guo, YX; Guo, B; Fan, HM; Zu, KL; Wang, XD; Zheng, ZM; Liu, JH; Lei, XG;
Indirizzi:
Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China Chinese Acad Sci Lanzhou Peoples R China 730000 730000, Peoples R China
Titolo Testata:
HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
fascicolo: 11, volume: 25, anno: 2001,
pagine: 1106 - 1112
SICI:
0254-3052(200111)25:11<1106:ROTCTS>2.0.ZU;2-#
Fonte:
ISI
Lingua:
CHI
Soggetto:
SEPARATOR; ISOTOPES;
Keywords:
ion source; capillary ionization; on-line isotope separator; separation efficiency;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Zhao, ZZ Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China Chinese Acad Sci Lanzhou Peoples R China 730000 Peoples R China
Citazione:
Z.Z. Zhao et al., "Research of the capillary target-ion source system in on-line experiment", HIGH EN P N, 25(11), 2001, pp. 1106-1112

Abstract

In order to study new isotopes and nuclear decay, properties in the A > 170 mass region, the laser ion source is needed and developed. For on-line isotope separator. it is required that the capillary ionization has a speciality, of low hot ionization efficiency and high ion extraction efficiency. The principle of the hot capillary ionization was described. The employment of Nb capillary reduces the temperature for forming the plasma potential and inhibitory hot ionization. The ionization tube is made of a Nb capillary of 2.2mm outside diameter, 1.7mm inside diameter and 30mm effective length. The temperature is 1600-2500K when the current is 40-100A. The target chamber is structured by Ta tube of 0.1mm wall thickness and windows of 6 mum Ta foil at two ends. Its maximum temperature is 2200K with the current 300A. The test experiment with on-line conditions at isotope separator ISOLAND has been performed. Yb-167 ( T-1/2 = 17.5min) isotope was produced in nuclear reaction O-18 (50MeV/u) + Ta-nat --> Yb-167. In the condition of target chamber temperature 2130K and capillary temperature 2130K, the total efficiency is 0.2%, This target-ion source system will be satisfied in laser ion source.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/06/20 alle ore 23:43:33