PRODUCTION OF RADIOACTIVE PREPARATIONS ENRICHED BY THE METHOD OF SZILARD AND CHALMERS. I. PRODUCTION OF RADIOACTIVE PREPARATIONS OF IODINE AND BROMINE

Journal Article · Sat Jan 01 00:00:00 EST 1955 · Zeszyty Nauk. Univ. Jagiel. Ser. Nauk Mat. Przyrod. MAt., Fiz. Chem.

OSTI ID:4206726

Zlotowski, I; Halpern, A; Polaczek, A

The possibility has been ascertained of producing radioactive preparations of Br and I having an absolute activity of 0.3 to 0.5 mu C by means of a small Ra-Besource in accordance with (n, gamma ) reaction. The source having an activity of about 2 x 10 neutrons/sec is made of Pt-ampules containing 150 mg Ra in 300 g comminuted Be. Neutrons were decelerated to thermal velocities with a paraffin diaphragm. To obtain I/sup 128/, CH/sub 3/I was activated, to obtain Br/sup 80/--CH/sub 3/Br (I), C/sub 6/H /sub 5 Br (II) or II with 10% added C/sub 6/H/sub 5/NH/sub 2/ (III). The preparations were enriched by the method of Szilard and Chalmers. To separate the unrestrained portion of radioactive isotopes, use was made of extraction with 1.5 N NaOH. Restraining coefficient of I/sup 128/ is 51%, that of Br/sup 80/ obtained by activation of I, II or II + III, 46, 52, and 21%, respectively. Enrichment coefficient of I/sup 128/ is 3 x 10/sup 4/, that of Br/sup 80/ produced from II + III, approximately 10/sup 4/.

• Research Organization: Jagiellonski Univ., Poland
• NSA Number: NSA-13-022044
• OSTI ID: 4206726
• Journal Information: Zeszyty Nauk. Univ. Jagiel. Ser. Nauk Mat. Przyrod. MAt., Fiz. Chem., Vol. Vol: No. 1; Other Information: Orig. Receipt Date: 31-DEC-59; Related Information: Translated from Referat. Zhur. Khim. No. 13, 1958, Abstract No. 42470
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
ACIDITY
ACTIVATION
AMINES
ANILINE
BERYLLIUM
BROMIDES
BROMINE
BROMINE 80
CANNING
CHEMICAL REACTIONS
ENRICHMENT
GAMMA RADIATION
IODIDES
IODINATED HYDROCARBONS
IODINE
IODINE 128
LABELLED COMPOUNDS
MEASURED VALUES
METHYL RADICALS
MIXING
MODERATORS
NEUTRON BEAMS
NEUTRON FLUX
NEUTRON SOURCES
ORGANIC BROMINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PARAFFIN
PERFORMANCE
PHENYL RADICALS
PLATINUM
PREPARATION
QUANTITY RATIO
RADIATION DOSES
RADIOISOTOPES
RADIUM
RECOILS
SEPARATION PROCESSES
SODIUM HYDROXIDES
SOLUTIONS
SOLVENT EXTRACTION
SZILARD-CHALMERS REACTION
THERMAL NEUTRONS
TRANSLATIONS
WEIGHT