A new approach to quench correction when measuring 241Pu in the presence of Pu-α by supported-disc liquid scintillation spectrometry

1996 ◽  
Vol 47 (9-10) ◽  
pp. 875-878 ◽  
Author(s):  
O.M Condren ◽  
L.León Vintró ◽  
P.I Mitchell ◽  
T.P Ryan
Keyword(s):  
Liquid Scintillation ◽  
Liquid Scintillation Spectrometry ◽  
New Approach

Determination of radium isotopes in mine waters through alpha- and beta-activities measured by liquid scintillation spectrometry

1997 ◽  
Vol 222 (1-2) ◽  
pp. 69-74 ◽  
Author(s):  
Nguyen Dinh Chau ◽  
J. Niewodniczański ◽  
J. Dorda ◽  
A. Ochoński ◽  
E. Chrusciel ◽  
...  
Keyword(s):  
Liquid Scintillation ◽  
Liquid Scintillation Spectrometry ◽  
Mine Waters ◽  
Radium Isotopes

scholarly journals Preparation of 93Mo solution using proton irradiated Nb

2019 ◽  
Vol 322 (3) ◽  
pp. 1833-1839 ◽  
Author(s):  
Szabolcs Osváth ◽  
Jixin Qiao ◽  
Xiaolin Hou
Keyword(s):  
Nuclear Waste ◽  
Chromatographic Separation ◽  
Liquid Scintillation ◽  
Decontamination Factor ◽  
Liquid Scintillation Spectrometry ◽  
Target Holder ◽  
Carrier Free ◽  
Long Time ◽  
Co Precipitation

Abstract 93Mo is an important long-lived radionuclide in nuclear waste, and is required to be measured during the characterization of decommissioning waste. However, no commercial 93Mo solution is available to be calibrated and used as standard in the analysis of nuclear waste. This work presents a method for separation of 93Mo from Nb metal used in cyclotron as a target holder and irradiated with protons for long time. The separation of 93Mo from Nb matrix was implemented by combination of precipitation and chromatographic separation. The Nb matrix was first removed by precipitating oxides-hydroxides of Nb (e.g. Nb2O5) and then by Fe(OH)3 co-precipitation; Mo in the solution was purified using an alumina (Al2O3) column. A decontamination factor of ca. 105 was achieved for Nb. A pure carrier-free 93Mo solution was successfully prepared, and the 93Mo purity was verified by liquid scintillation spectrometry.

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