The head of the group, doc. dr. Simon Širca, is a spokesperson for the E05-102 experiment "Measurement of Ax and Az asymmetries in the quasi-elastic 3He(e,ed) reaction" of the Hall A Collaboration at Jefferson Laboratory, USA. This project is devoted to the investigation of the spin structure of He3, and to obtaining information that are of crucial importance to understanding this nucleus as an effective neutron target.
D.01 Chairing over/coordinating (international and national) projects
COBISS.SI-ID: 1970276In 2006 we have founded, equipped, and started work in the new laboratory for liquid scintillation spectrometry at the Jožef Stefan Institute. The laboratory is led by dr. Jasmina Kožar-Logar who is the member of our group. At present, the laboratory has two units: a measurement room with a liquid scintillation spectrometer, and a preparatory unit to handle the tritium samples and containing the electrolysis enrichment system. Within this laboratory we are capable of performing measurements of tritium for radiological purposes and for dating of waters.
D.02 Establishment of a research centre, laboratory, study course, association
COBISS.SI-ID: 469499In collaboration with the Oncological institute of Ljubljana and the Laboratory for termoluminiscence dosimetry (TL) at the Jožef Stefan Institute we have performed a pilot investigation, in which the radiation field of a strong iridium gamma source has been determined. Such powerful radiation sources are used at the Oncological institute in treatments of cervical cancer. We have shown that the TL dosimeters, usually applied in the field of environmental dosimetry only, can be used with great accuracy to determine the doses of gamma rays in air as well as water (or human tissue).
F.22 Improvement to existing health/diagnostic methods/procedures
COBISS.SI-ID: 1916772We have developed a program to compute the efficiencies for large-volume samples, base on the calibration of the detectors with point sources. This program is relevant for the use of gamma spectrometry in field conditions and during emergencies, when all procedures of spectrum analysis have to be fully automated as well as reliable. The package will be used by the Mobile unit of the Ecological laboratory of our group as well as to the corresponding unit of the Krško nuclear power plant.
F.17 Transfer of existing technologies, know-how, methods and procedures into practice
COBISS.SI-ID: 19287591A device and procedure for detection of flow in metal capillaries: patent SI22174A.
F.33 Slovenian patent
COBISS.SI-ID: 19590439In collaboration with the Oncological institute of Ljubljana and the Laboratory for termoluminiscence dosimetry (TL) at the Jožef Stefan Institute we have performed a pilot investigation, in which the radiation field of a strong iridium gamma source has been determined. Such powerful radiation sources are used at the Oncological institute in treatments of cervical cancer. We have shown that the TL dosimeters, usually applied in the field of environmental dosimetry only, can be used with great accuracy to determine the doses of gamma rays in air as well as water (or human tissue).
F.22 Improvement to existing health/diagnostic methods/procedures