Preparation of background samples for accurate low-level measurements by liquid-scintillation spectrometry

✍ Scribed by Takahisa Kato; Kazumi Saito

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 257 KB
• Volume: 524
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2004.02.008

✦ Synopsis

For precise measurement of low-level b-radioactivity by liquid-scintillation spectrometry, it is essential to prepare a so-called background sample, the count rate of which corresponds approximately to the background count rate of the source to be measured. A method for preparing such background samples is described in this paper. It has been successfully applied to the determination of 14 C radioactivity as low as 30 mBq with a relative uncertainty of less than 5%.