INTRODUCTORY REMARKS FROM THE ARTICLE, A NEW METHOD FOR INVESTIGATING RELAXATION PROCESSES AND ITS USE IN STUDYING CERTAIN PHYSICAL PHENOMENA

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600350139-9
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: August 22, 2011
• Sequence Number: 139
• Publication Date: October 3, 1950
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/09/14: CIA-RDP80-00809A000600350139-9
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CLASSIFICATION CONFIDENTIAL
CENTRAL INTELLIGENCE AGENCY REPORT
INFORMATION FROM
FOREIGN DOCUMENTS OR RADIO BROADCASTS CD NC.
v~tv 11 ~y YN- .... _
Scientific - Physics, relaxation phenomena
Monthly periodical
Moscow
May 1950
Russian
DATE OF
INFORMATION 1950
DATE DIST. 3 00 1950
NO. OF PAGES
SUPPLEMENT TO
REPORT NO.
THlr DOCIINT CONTAUA IS-ORON IVnCTIIID THE NATIDIIAI. 1111110
OF TNR UIMITHD RTATHV tln,:AT,. REARING OF ESPIONAGE ACT RD
Y. N. C.. AI AND A7. AS AMENDED. In TRANSMISSION OR THE REVELATION
Or In CONTISTO in ART MANNER TO AN UNAUTHORIZED PERSON Ir PRO'
IISITI D IT LAW. RIPOODUCTIOR OF THIS room is -NO1INInO.
Uspekhi Fizicheskikh Nauk, Vol XLI, No 1, pp 44-107
INTRODUCTORY REMARKS FROM THE ARTICLE,
"A NEW METHOD FOR INVESTIGATING RELAXATION PROCESSES AND
ITS USE IN STUDYING CERTAIN PHYSICAL PHENOMENA"
N. A. Tolstoy
P. P. Feofilov
D
CONFIDENTIAL
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Relaxation phenomena are classified as "very feat" (0 to 10-7 sec), "fast"
(10-7 to 10-1 sec), and "slow" (10-1 to 10 sec).
This article is devoted to the problems of procedure in studying "fast"
(10-7 to 10-1 sec) relaxation. In the actual tests, the authors succeeded in
covering only the interval 10-5 to 10-1 sec for light (illumination) excitation
and the interval 10-3 to 10-1 sec for elect'-ical,
Fast processes are connected with very important phenomena in: semiconduc-
tors (photoconductivity, valve Zt_ube7 photoeffect, unipolar conductivity); crys-
tallophosphors; photocathodes, X-ray and radio-luminescence; dielectrics (relaxa-
tion polarization); colloid solutions (anisotropy induced by external fields,
electrophores, etc.); electrolytes (Becquerel's photoelectric effect); solid and
liquid solutions (prolonged fluorescence); gases (gaseous discharge accompanied
by the formation of metastable atoms and ions); surfaces (evaporation of ions);
fast-relaxation mechanical systems (stress relaxation in polymers), etc.
This article considers the diverse methods that can be employed to investigate
relaxation in the above-mentioned phenomena in the section on application of the
method.
The input excitation is in the form of a 9-pulse, which gives the simplest
possible transition from one constant condit'on to another. The resulting re-
sponse (output) is represented on an oscillograph screen.
The essence of the new method is the use of "functional" time (f(t)) scales
instead of the usual "linear" one (t), which causes the curve to lie close, i.e.,
asymptotically, to the vertical and time axes. The "functional" time initially
flows gaickly and then gradually more slowly. It is aFumed that the linear time
scale is extraneous to the specific nature of relaxatidh processes.
 Sanitized Copy Approved for Release 2011/09/14: CIA-RDP80-00809A000600350139-9
Thus, complex unknown relaxation processes are studied in "asymptotic
time coordinates" created by known processes. Two methods are employed: (1)
method of rectification (integration) and (2) method of partial times, which
permit one to obtain various exponential developments of time instead of
linear ones (e.g., exp - t/RC, etc.).
It must be remembered that a physical system in a state of equilibrium
represents a "balanced" or "average" picture the details of which are blurred.
It is only during a transition from one equilibrial state to another that the
hidden mechanism is revealed temporarily, i.e., during the relaxation interval.
Hence follows the importance of relaxation phenomena.
CO~EID~CH~iA~
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