SCIENTIFIC ABSTRACT ZALESSKIY, V. YU. - ZALETAYEV, V. S.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001963630009-4
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Document Release Date: September 19, 2001
• Sequence Number: 9
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

S/169/62/000/003/034/098
The roentgeno-radiometric ... D228/D301
of fluoroscent roaritgenosi)ectral analysiB are mentioned: 1) The
ease with which the K_ucriav of elements with high atomic numbers
can be used for analysis which allows meaouremento to be made with
small samples, thus eliminating errors connected with selective
absorption;~2) the possibility of creating cheap and transportable
equipment, with an atomic supply; 3) a higher sequence sensitivity
which for different elements lies in the range 0.1 - 1.0%. A de-
:ect of the method is its small resolving capacity. When using a
scintillation counter it is possible to determine elements with
atomib numbers, differing by 6 - 7 units from those of other ele-
ments present in commensu:rable quantities. The employment of pro-
portional counters raises the method's resolving capacity and also
allows elements with small atomic numbers to be analyzed. The ra-
diation sources should possess: 1) A sufficiently high specific ac-
tivity; 2) an adequately high discharge of radiation with a quan-
tum energy sufficient to excite the atoms of the elements that are
being determined; 3) the hard gamma- and beta-radiation; and 4)
a half-life period of from 2 - 3 months to 1 - 2 years. These re-
Cara 2/3

S/169/62/000/003/034/098
The roentgono-radiometric ... D228/D301
quirements are satisfied by Tu170 and T12040 etc. The authors used
cn. Tu170 source with an activity of 2.6 - 26 curies. Measurement
methods in thin and saturated layers were tested together with
two-layer measurements.-The technique was tested in the analysis
of ores, concentrates, and minerals for zircon, niobium, tantalum,
total rare-earths, and other elments. /-Abstracter's note: Com-
plete translation.2
Card 3/3

YAKTJBCVICH,l A*Ya.; ZALESSXIY9, V.Yu.
I-ray spectroscopic analysis with the use of the TV
radiation a-Arce and differential filters. Zar.lab.
n9.6%713-720 161.
Al
170
2~
(MIRA 14:6)
(X-ray spectroscopy)

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