Naslov
Long-term accuracy and precision of PIXE and PIGE measurements for thin and thick sample analyses

Autori
Cohen, David D. ; Siegele, Rainer ; Orlić, Ivo ; Stelcer, Ed

Izvornik
Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms (0168-583X) 189 (2002), 1/4; 81-85

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
PIXE ; accuracy ; precision

Sažetak
This paper describes PIXE/PIGE measurements on thin Micromatter Standard (
5%) foils run over a period of 10 years. The selected foils were typically 50 lg/cm2 thick and covered the commonly used PIXE X-ray energy range 1.4– 20 keV and the light elements F and Na for PIGE studies. For the thousands of thick obsidian and pottery samples analysed over a 6-year period, the Ohio Red Clay standard has been used for both PIXE and PIGE calibration of a range of elements from Li to Rb. For PIXE, the long-term accuracy could be as low as
1.6% for major elements with precision ranging from
5% to
10% depending on the elemental concentration. For PIGE, accuracies were around
5% with precision ranging from
5% in thick samples to
15% in thin samples or for low yield c-ray production.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA