1967
DOI: 10.1007/bf00500585
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Schnelle radiochemische Trennungen durch Isotopen-und Ionenaustausch an vorgeformten Niederschlägen

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Cited by 36 publications
(9 citation statements)
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“…Sources of 24 s i37I were obtained from 235U fission produced by thermal neutron pulse irradiation (30 ms FWHM) in the Mainz TRIGA reactor, with a fast radiochemical separation procedure based on the ion exchange of fission halogens into preformed AgI precipitates [11]. Fission bromine and iodine were separated from each other by an oxidation-reduction cycle [12,13].…”
Section: Ii1 Delayed Neutron Spectrummentioning
confidence: 99%
“…Sources of 24 s i37I were obtained from 235U fission produced by thermal neutron pulse irradiation (30 ms FWHM) in the Mainz TRIGA reactor, with a fast radiochemical separation procedure based on the ion exchange of fission halogens into preformed AgI precipitates [11]. Fission bromine and iodine were separated from each other by an oxidation-reduction cycle [12,13].…”
Section: Ii1 Delayed Neutron Spectrummentioning
confidence: 99%
“…In short the sequence was as follows: Upon impact of the rabbit containing the uranyl nitrate powder in the head of the apparatus a hammer opened the rabbit and the uranyl nitrate fell into a reservoir containing hot 0.5 M HNO3/SO 2 for dissolution and reduction of iodine and bromine. The solution was then sucked over a prefabricated filter of AgC1 where fission product iodide and bromide were retained [10]. This step was considered to be essential because it removed among others the two longest-lived delayed neutron precursors 24s 137I and 56s 87Br which could potentially interfere with the fission fragment detection by inducing fission of uranium even after delay times of a few minutes.…”
Section: Chemical Separations Of Protactiniummentioning
confidence: 99%
“…Dabei erwiesen sich die Halogenisotope als Hauptbestandteil [12] und Isotope des Arsens [13,14], Kryptons [15,16] und Rubidiums [15,17,18] Bei den Halogenabtrennungen wurden 0,5 η salpetersaure Lösungen bestrahlt, die S0 2 und je 0,1 mg Brund J~-Träger enthielten. Jodid wurde an einer Schicht von 0,5 mMol Silberjodid, Bromid gemeinsam mit Jodid an entsprechenden Silberchloridschichten isoliert [22]. Durch vorangehende Indikatorversuche wurde sichergestellt, daß keine störenden Anteile an Selen, Tellur und Antimon durch Austausch, Reduktion oder Hydrolyse in die Filterschicht gelangen.…”
Section: Introductionunclassified
“…Zum Austausch an Bariumcarbonat wurden mit Ammoniumcarbaminat und S0 2 versetzte Lösungen bestrahlt, zum Austausch an Bariumsulfat Lösungen in 0,5-2n Schwefelsäure [22]. Da eine schnelle, spezifische Trennmethode für Yttrium nicht bekannt ist, wurde eine Gruppentrennung herangezogen, nämlich die Lösungsmittel-extraktion aus 0,5 η Salzsäure in eine Schicht aus Di-2-äthylhexylorthophosphorsäure auf Hostaflon-C2-Pulver [23].…”
Section: Introductionunclassified
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