Evaluation of possibility presence neutrons in environment of low-background gamma spectroscopy system
- 1. Faculty of sciences, Novi Sad, (Serbia)
Description
Gamma lines emitted after neutron capture, as well as after inelastic scattering in a Ge spectroscopy system were detected and analyzed in different environments. Two HPGe detectors were located in two different passive shields: one in pre WW II iron, and the second in commercial low-background lead. The flux of neutrons was calculated and the obtained values were compared for the two different kinds of detector shield. Several materials having different neutron slowing-down properties were packed in Marinelli geometry, positioned on the lead shielded detector and measured for around 1000 ks. The main goal was to estimate a possible influence of the sample on the intensity of the neutron induced Ge gamma lines. On the iron shielded detector a massive (3 inch thick) NaI Compton suppression system showed a measurable activity from neutron capture and inelastic scattering at sodium. (author)
Abstract (Serbian)
Gama zracenje emitovano nakon zahvata neutrona kao i nakon neelastcnog rasejanja u Ge spektroskopskom sistemu je detektovano i analizirano. Koriscena su dva HPGe detektora sa razlicitim tipovima pasivne zastite (jedan od njih je bio smesten u gvozdenoj zastiti a drugi u olovnoj zastiti). Odredjene su vrednosti fluksa neutrona i poredjene su za razlicite tipove zastite detektora. Nekoliko materijala koji imaju razlicite uticaje na usporavanje nutrona pakovani su u Marineli geometriju, postavljeni oko HPGe detektora u olovnoj zastiti, vrsena su merenja koja su trajala priblizno 1000 ks i odredjen je uticaj tih materijala na intezitet neutronima indukovanih germanijumskih gama linija. Takodje, merenjem pomocu HPGe detektora u gvozdenoj zastiti koji je bio pasivno okruzen sa zastitnim NaI detektorom odredjena je aktivnost koja potice od zahvata neutrona i neelasticnog raseanja na jezgrima joda i natrijuma.Files
41131383.pdf
Files
(350.8 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:6b78d20e7b38a275a821439c6f73ce3c
|
350.8 kB | Preview Download |
Additional details
Additional titles
- Original title (Serbian)
- Mogucnost procene prisustva neutrona u okruzenju niskofonskog gama spektrometra
Publishing Information
- Publisher
- Institute of Nuclear Science VINCA, Radiation Protection Society of Serbia and Montenegro
- Imprint Place
- Belgrade (Serbia)
- ISBN
- 978-86-7306-112-2
- Imprint Title
- Proceedings of 25. Symposium of Radiation Protection Society of Serbia and Montenegro
- Imprint Pagination
- 362 p.
- Journal Page Range
- p. 279-283
- Report number
- INIS-RS--1492
Conference
- Title
- 25. Symposium of Radiation Protection Society of Serbia and Montenegro
- Original Conference Title
- XXV Simpozijuma Drustva za zastitu od zracenja Srbije i Crne Gore
- Dates
- 30 Sep - 2 Oct 2009
- Place
- Kopaonik (Serbia)
INIS
- Country of Publication
- Serbia
- Country of Input or Organization
- Serbia
- INIS RN
- 41131383
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Conference, Numerical Data
- Descriptors DEI
- CAPTURE; COMPARATIVE EVALUATIONS; COPPER SULFATES; EXPERIMENTAL DATA; GAMMA SPECTROMETERS; GEOMETRY; HIGH-PURITY GE DETECTORS; INELASTIC SCATTERING; IRON; LEAD; NAI DETECTORS; NEUTRON FLUX; NEUTRON REACTIONS; PARAFFIN; SHIELDING MATERIALS; SLOWING-DOWN; SODIUM; SODIUM CHLORIDES; SPECTRA; THERMALIZATION
- Descriptors DEC
- ALKALI METAL COMPOUNDS; ALKALI METALS; ALKANES; BARYON REACTIONS; CHLORIDES; CHLORINE COMPOUNDS; COPPER COMPOUNDS; DATA; ELEMENTS; EVALUATION; GE SEMICONDUCTOR DETECTORS; HADRON REACTIONS; HALIDES; HALOGEN COMPOUNDS; HYDROCARBONS; INFORMATION; MATERIALS; MATHEMATICS; MEASURING INSTRUMENTS; METALS; NUCLEAR REACTIONS; NUCLEON REACTIONS; NUMERICAL DATA; ORGANIC COMPOUNDS; OTHER ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; RADIATION DETECTORS; RADIATION FLUX; SCATTERING; SCINTILLATION COUNTERS; SEMICONDUCTOR DETECTORS; SLOWING-DOWN; SODIUM COMPOUNDS; SOLID SCINTILLATION DETECTORS; SPECTROMETERS; SULFATES; SULFUR COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS; WAXES
Optional Information
- Notes
- 4 refs., 3 tabs. Imprint:Zbornik radova XXV Simpozijuma Drustva za zastitu od zracenja Srbije i Crne Gore