Published 1974 | Version v1
Journal article Metadata-only

Recoil chemistry in ammonium perrhenate crystals: temperature and solvent effects

Creators

  • 1. Louvain Univ. (Belgium). Lab. de Chimie Inorganique et Nucleaire

Description

A retention value of 68% is observed in ammonium perrhenate which has been neutron activated at -550C. Annealing increases this value up to 95% with an activation energy of 0.45 eV. Different dissolution conditions show evidence of a solvent effect, provided the samples have not been annealed. No effects of gamma pre-irradiations are observed, as long as the reactor temperature is low enough. (orig.)

Abstract (German)

Die Retention des bei -550C, neutronenaktivierten Ammoniumperrhenats variiert unter dem Einfluss thermischer Ausheilung zwischen 68 und 95%. Die Aktivierungsenergie wurde zu 0,45 eV berechnet. Aus dem Vergleich der Loesungsbedingungen folgt, dass ein Loesungsmitteleffekt dann besteht, wenn die Aufloesung vor der Ausheilung der perturbierten Zone erfolgt, die das aktive Atom enthaelt. Ein spezifischer Effekt vorhergehender γ-Radiolyse wurde nicht festgestellt. (orig.)

Additional details

Identifiers

DOI
10.1524/ract.1974.21.34.125;

Publishing Information

Journal Title
Radiochimica Acta
Journal Volume
21
Journal Issue
3-4
Series
Radiochim. Acta.
Journal Page Range
125-127
ISSN
2193-3405

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
7241896
Subject category
S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
Descriptors DEI
ACTIVATION ENERGY; AMMONIUM COMPOUNDS; ANNEALING; CRYSTALS; DISSOLUTION; GAMMA RADIATION; HOT ATOM CHEMISTRY; IRRADIATION; LOW TEMPERATURE; NEUTRON REACTIONS; PERRHENATES; RADIOLYSIS; RETENTION; RHENIUM; SAMPLE PREPARATION; SOLVENTS; TEMPERATURE DEPENDENCE
Descriptors DEC
BARYON REACTIONS; CHEMICAL RADIATION EFFECTS; CHEMICAL REACTIONS; CHEMISTRY; DECOMPOSITION; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY; HADRON REACTIONS; HEAT TREATMENTS; IONIZING RADIATIONS; METALS; NUCLEAR REACTIONS; NUCLEON REACTIONS; OXYGEN COMPOUNDS; RADIATION EFFECTS; RADIATIONS; RADIOCHEMISTRY; RHENIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; TRANSITION ELEMENTS

Optional Information

Notes
4 figs.; 2 tabs.; 8 refs.; Updated automatically by Metadata and Full-Text Enrichment Agent