A multi-sample liquid scintillation counting system for weak beta-emitting samples with single phototube detectors

2000 ◽  
Vol 53 (1-2) ◽  
pp. 297-301 ◽  
Author(s):  
P Theodorsson
Keyword(s):  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Counting System

scholarly journals Low Background Liquid Scintillation Counting Using an Active Sample Holder and Pulse Discrimination Electronics

Radiocarbon ◽  
1989 ◽  
Vol 31 (03) ◽  
pp. 332-341 ◽  
Author(s):  
John E Noakes ◽  
Robert J Valenta
Keyword(s):  
Experimental Data ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Background Radiation ◽  
Scintillation Counting ◽  
Sample Holder ◽  
Counting System ◽  
Low Background ◽  
Low Level ◽  
Beta Counting

A Packard low-level liquid scintillation counting system is described which provides superior low-background beta-counting capability for3H and14C. The design is based on a novel pulse-discrimination circuit that separates background from valid scintillation pulses. Background discrimination is further enhanced by adding a plastic vial holder that acts as an anticoincidence guard. When excited by background radiation, the scintillation properties of the plastic provide an increased burst of photons to the detection electronics, which discriminate based on the number of component pulses in the burst. Experimental data demonstrate the low-level counting capabilities of this counter.

scholarly journals Liquid Scintillation Counting in the London Underground

Radiocarbon ◽  
1989 ◽  
Vol 31 (03) ◽  
pp. 393-398 ◽  
Author(s):  
Sheridan Bowman
Keyword(s):  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Gamma Ray ◽  
Scintillation Counting ◽  
Counting System ◽  
Background Count ◽  
Gamma Ray Spectrometer ◽  
London Underground ◽  
Below Ground ◽  
A Site

At the 12th International Radiocarbon Conference held in Trondheim, the potential of the London Underground as a site for liquid scintillation counting was considered (Bowman, 1986). This was discussed in light of a survey of three possible locations using a portable gamma-ray spectrometer. Two liquid scintillation counters, a Packard 3255 and an LKB “Kangaroo”, have now been successfully installed in a vault which is some 30m below ground. The reduction in background count rates achieved is discussed, together with other improvements made to the counting system.

scholarly journals 14C Dating with the Icels Liquid Scintillation Counting System Using Fixed-Energy Balance Counting Window Method

Radiocarbon ◽  
2012 ◽  
Vol 54 (02) ◽  
pp. 267-273
Author(s):  
Konrad Tudyka ◽  
Anna Pazdur
Keyword(s):  
Energy Balance ◽  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
14C Dating ◽  
Counting System ◽  
Fixed Energy ◽  
Window Method ◽  
Counting Window

This article presents an application of a fixed-energy balance counting window in radiocarbon dating of geological peat samples. We determine a fixed-energy balance counting window with an inexpensive liquid scintillation counting ICELS system. We show long-term modern biosphere standard records that show stability sufficient for dating samples up to approximately 30,00014C yr BP. We then compare our results to ones obtained previously using a Quantulus 1220™.

Development of 3-PM liquid scintillation counting system with geometrical efficiency variation

2004 ◽  
Vol 60 (2-4) ◽  
pp. 469-473 ◽  
Author(s):  
Han-Yull Hwang ◽  
Seong-Im Kwak ◽  
Hwa Yong Lee ◽  
Jong-Man Lee ◽  
Kyung-Beom Lee ◽  
...  
Keyword(s):  
Liquid Scintillation Counting ◽  
Liquid Scintillation ◽  
Scintillation Counting ◽  
Counting System
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