Reactor dosimeter for irradiation experiments on the reactor station Geesthacht
Description
The object of the reactor dosimetry is the determination of the thermal, epithermal and fast neutron flux in using irradiation. The reactor dosimetry in Geesthacht is carried out with wires or foils made of iron, nickel, cobalt, titanium, niobium, silver and with a few of their alloys. The activities of the wires or foil series are here gamma spectroscopically batchwise automatically measured with semiconductor detectors. The data obtained are firstly stored on magnetic tapes and then are evaluated on the large computer TR 440 to calculate the fluence values. Niobium probes must generally be subjected to chemical treatment prior to the measurement to separate off the interfering tantalum activity if a seperation due to the various half-lifes is not possible. The influence of the neutron spectrum on the evalutation is shown by means of examples. (orig.)
Availability note (English)
MF available from INIS under the Report Number.Abstract (German)
Das Ziel der Reaktordosimetrie ist die Ermittlung des thermischen, epithermischen und schnellen Neutronenflusses in Bestrahlungseinsaetzen. Die Reaktordosimetrie in Geesthacht wird mit Draehten oder Folien aus Eisen, Nickel, Kobalt, Titan, Niob, Silber und mit einigen ihrer Legierungen durchgefuehrt. Dabei werden die Aktivitaeten der Draehte bzw. Folienreihen gammaspektroskopisch mit Halbleiterdetektoren abschnittsweise automatisch durchgemessen. Die erhaltenen Daten werden zunaechst auf Magnetbaendern gespeichert und anschliessend zur Berechnung der Fluenzwerte auf dem Grossrechner TR 440 ausgewertet. Niobsonden muessen in der Regel vor der Messung zur Abtrennung der stoerenden Tantalaktivitaet einer chemischen Behandlung unterzogen werden, wenn nicht eine Trennung aufgrund der verschiedenen Halbwertszeiten moeglich ist. Der Einfluss des Neutronenspektrums auf die Auswertung wird anhand von Beispielen gezeigt. (orig.)
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Additional details
Additional titles
- Original title (German)
- Reaktordosimetrie fuer Bestrahlungsexperimente an der Reaktorstation Geesthacht
Publishing Information
- Imprint Pagination
- 107 p.
- Report number
- GKSS--76/E/34
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 8297876
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- ACTIVATION DETECTORS; ALLOYS; AUTOMATION; CALIBRATION; COBALT; COMPUTER CALCULATIONS; DATA PROCESSING; EPITHERMAL NEUTRONS; FAST NEUTRONS; FRG-1 REACTOR; GAMMA SPECTROSCOPY; IRON; IRRADIATION REACTORS; NEUTRON DOSIMETRY; NEUTRON FLUENCE; NEUTRON FLUX; NEUTRON SPECTRA; NIOBIUM; PROGRAMMING; SILVER; THERMAL NEUTRONS
- Descriptors DEC
- BARYONS; DOSIMETRY; ELEMENTARY PARTICLES; ELEMENTS; ENRICHED URANIUM REACTORS; FERMIONS; HADRONS; MEASURING INSTRUMENTS; METALS; NEUTRON DETECTORS; NEUTRONS; NUCLEONS; POOL TYPE REACTORS; RADIATION DETECTORS; RADIATION FLUX; REACTORS; RESEARCH AND TEST REACTORS; RESEARCH REACTORS; SPECTRA; SPECTROSCOPY; TEST REACTORS; THERMAL REACTORS; TRAINING REACTORS; TRANSITION ELEMENTS; WATER COOLED REACTORS; WATER MODERATED REACTORS
Optional Information
- Notes
- 8 refs.; with figs. and tabs.