OLGA-II, AN ONLINE GAS CHEMISTRY APPARATUS FOR APPLICATIONS IN HEAVY ELEMENT RESEARCH

被引：60

作者：

GAGGELER, HW ^{[1
]}

JOST, DT ^{[1
]}

BALTENSPERGER, U ^{[1
]}

WEBER, A ^{[1
]}

KOVACS, A ^{[1
]}

VERMEULEN, D ^{[1
]}

TURLER, A ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1991年 / 309卷 / 1-2期

关键词：

D O I：

10.1016/0168-9002(91)90103-W

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

OLGA II is a device which performs on-line gas phase separations of volatile compounds of atoms produced in nuclear reactions. Reaction products are attached to aerosol particles and transported in a gas-jet to a heated quartz column and stopped in a quartz wool plug kept at 900 to 1000-degrees-C. Volatile compounds are formed by the addition of reactive gases. The volatile compounds are transported along a cooler, isothermal part of the column by the gas flow. The retention time in the isothermal part of the column is related to the enthalpies of adsorption of the compounds on the quartz surface. Separated atoms leaving the column are attached to new aerosol particles and transported through a second gas-jet to a detection system. This apparatus consists of a modified tape system. In a first collecting chamber the products are deposited on the surface of a stepwise moving tape. At preset times the deposited activity is moved past a series of six counting chambers equipped with charged particle or high-purity germanium detectors for alpha, spontaneous-fission, X- and gamma-ray counting. Data acquisition is performed event-by-event which allows to detect also correlated events. The system can be used for nuclides with half-lives longer than about 10 s. Correlated events can be resolved for times greater-than-or-equal-to 150-mu-s between consecutive decays.

引用

页码：201 / 208

页数：8

共 34 条

[11]

Hinds W.C., 1982, AEROSOL TECHNOLOGY

[12]

HINDS WC, 1982, AEROSOL TECHNOLOGY P, P131

[13] SEARCH FOR LAWRENCIUM AS A P-ELEMENT USING GAS-CHROMATOGRAPHY TECHNIQUES [J].

JOST, DT ;

GAGGELER, HW ;

VOGEL, C ;

SCHADEL, M ;

JAGER, E ;

EICHLER, B ;

GREGORICH, KE ;

HOFFMAN, DC .

INORGANICA CHIMICA ACTA, 1988, 146 (02) :255-259

[14]

JOST DT, 1991, IN PRESS 7TH P C REA

[15] RAPID AUTOMATED BATCHWIZE RADIOCHEMICAL SEPARATION TECHNIQUES [J].

MEYER, RA .

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1990, 142 (01) :135-144

[16] VELOCITY FILTER SHIP, A SEPARATOR OF UNSLOWED HEAVY-ION FUSION PRODUCTS [J].

MUNZENBERG, G ;

FAUST, W ;

HOFMANN, S ;

ARMBRUSTER, P ;

GUTTNER, K ;

EWALD, H .

NUCLEAR INSTRUMENTS & METHODS, 1979, 161 (01) :65-82

[17]

Munzenberg G., 1974, International Journal of Mass Spectrometry and Ion Physics, V14, P363, DOI 10.1016/0020-7381(74)80070-7

[18] MEASUREMENT OF RETENTION VOLUME WITH A NEW CONTINUOUS METHOD USING A PARENT-DAUGHTER SYSTEM [J].

RUDOLPH, J ;

BACHMANN, K .

INORGANIC & NUCLEAR CHEMISTRY LETTERS, 1976, 12 (04) :365-371

[19]

SCHADEL M, 1989, RADIOCHIM ACTA, V48, P171

[20] FAST RADIOCHEMICAL SEPARATIONS WITH AN AUTOMATED RAPID CHEMISTRY APPARATUS [J].

SCHADEL, M ;

BRUCHLE, W ;

HAEFNER, B .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1988, 264 (2-3) :308-318

← 1 2 3 4 →