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JPRS 50736
15 June 1970
CPYRGHT
V. UPPER ATMOSPHERE AND SPACE RESEARCH
News
Investigation of Cosmic Rays on Atlantic Voyage
An expedition for the study of cosmic rays in the Atlantic area
departed from Riga on the "Kislovodsk" on 26 November 1967. The expedition
was organized by the Siberian Institute of Terrestrial Magnetism, Iono-
sphere and Radio Wave Propagation. The vessel returned to Leningrad on
10 March 1968. About 40 tons of special cargo had to be carried, includ-
ing 10 tons of balloons with hydrogen under a pressure of 150 atm. Cosmic
ray observations were made with a three-section neutron monitor, a stabil-
ized system of 35 meson and electron-photon telescopes and with strato-
spheric balloons. About 40,000 individual measurements were made on
shipboard and 64 balloons were launched for measuring cosmic rays and
stratospheric temperature. The charged component was registered with a
crossed azimuthal telescope which made it possible to use 35 channels for
registry of the soft and hard components from different directions at
angles 0, 45, 55, 65, 70 and 76° to the vertical. Six additional channels
were used for checking telescope operation and determining random coinci-
dences. A neutron monitor was used for studying the planetary distribution
of cosmic ray intensity. It was an IGY monitor with Simpson geometry con-
sisting of three sections, each with four SNM-8 counters. The statistical
error for the monitor was about +0.7 percent during 2 hours of registry.
It was calibrated using a radium-beryllium neutron source. Sixty-four of
74 balloon launchings were successful (complete data for each launching
are given in a table). The collected information will make it possible
to find the barometric coefficients for different cosmic ray components
and estimate their dependence on the energy of primary particles in the
range 1-20. 109 eV.
(Abstract:
"Investigations of Cosmic Rays in the Atlantic," by L. I.
Dorman ;. Moscow, Geofizicheskiy Byulleten', No 21, Izd-vo "Nauka," 1970,
pp 51-55)
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CPYRGHT
Cosmic Ray Expedition
In accordance with the recommendations of the Section on Cosmic Rays
and Radiation Belts of the Soviet Geophysical Committee and the Scientific
Council on the Problem "Cosmic Rays," an integrated expedition was organized
for investigating the distribution of the intensity of cosmic rays during
the period of low solar activity over the territory of the USSR. The
expedition was organized by the Siberian Institute of Terrestrial Magne-
tism, Ionosphere and Radio Wave Propagation Siberian Department Academy
of Sciences USSR; the scientific director was Doctor of Physical and
Mathematical Sciences L. I. Dorman.
The first stage of the expedition took place during July-October
1965 along the profile Irkutsk-Krasnoyarsk (along the Yenisei), Dudinka
(Arctic Ocean) , Murmansk-Kandalaksha (White Sea - Baltic Canal; Volga,
Don, Sea of Azov) , Tbilisi-Ashkhabad-Kushka-Tashkent-Alma-Ata-Novosibirsk-
Irkutsk. The apparatus included two neutron monitors with different geome-
try; a complex counter telescope with 24 different channels for the registry
of the M-meson, electron-photon and general components. Measurements in the
stratosphere were made with balloons. Investigations of the distribution
of cutoff rigidities important for study of the world picture were made;
correlation coefficients between primary and different secondary components
of cosmic rays were found ( including for oblique telescopes); total multi-
plicities were found for the generation of secondary particles of different
types.
The second stage in the expedition for investigating the distribution
of cosmic ray intensity over the territory of the USSR, organized by the
Siberian Institute of Terrestrial Magnetism, Ionosphere and Radio Wave
Propagation Siberian Department Academy of Sciences USSR under the direction
.of Doctor of Physical and Mathematical Sciences L. I. Dorman was in August-
September 1966. The route covered the eastern regions of the USSR:
Irkutsk,
Ust'-Kut, then along the Lena River to Tiksi, then by the Northern Sea Route
through Bering Strait into the Pacific Ocean to Vladivostok. For this stage
of the investigations a special expeditionary 12-counter neutron monitor was
developed; it consists of three independently operating sections. The
monitor was designed for work in the Arctic at low temperatures and also
under conditions close to tropical, a high temperature and humidity. A
series of tests made it possible to find measures for improving operation
of the monitor. In addition, measurements were made with a telescope and
measurements were made in the stratosphere with balloons. These data were
processed for finding the spatial distribution of cosmic rays, the correla-
tion coefficients and total multiplicities of generation of secondary parti-
cles.
The total results of the expedition will be published in the Rezul'-
tary Issledovaniy po Mezhdunarodnym Geofizicheskim Proyektam (Results of
Investigations Under International Geophysical Projects), a series published
by the committee. They are also to be published in the journal "Nuovo
Cimento" (Italy).
(Complete translation:
"Throughout the Soviet Union, " unsigned; Moscow,
Geofizicheskiy Byulleten', No 20, 1969, pp 66-67)
JPRS 50591 , 26 May 70,
SBGAS NO 229
pp 59-60
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1. Kar
Calen
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CPYRGHT
V. UPPER ATMOSPHERE AND SPACE RESEARCH
News
@
Cosmic Ray Station at Irkutsk
2216422
The Irkutsk cosmic ray station includes a neutron supermonitor (3
sections), azimuthal telescope (four telescopes of cubic geometry), a 42-
channel automatic recording system and an auxiliary recording device. The
mean value of the supermonitor (operative since 1967) intensity is 506,000
pulses/hours; for the aximuthal telescope it is 246,000 pulses/hour. The
instrument error for the supermonitor is / 0.35%; for the azimuthal telescope
it is / 0.2%.
(Abstract:
"Technical Data for the Cosmic Ray Station at Irkutsk", by M.
A. Kovalenko and L. A. Shapovalova; Apatity, Trudy 6-y Vses. Yezhegodn.
Zimn. Shkoly po Kosmofiz., Part 2, 1969, p. 129)
From:
Moscow, Referativnyy Zhurnal, Geofizika, Svodnyy Tom, No. 3, 1970,
3A867
Modification of Dipoles for Rocket Measurements
This article shows wind profiles to altitudes of 32 km obtained on
22 April 1968 using N5, CJ-5/1 and CJ-5/2 dipoles. The author describes
the merits of a new type of dipole (CJ-5/2) in comparison with type N5 used
earlier. The new type is a standard wind sensor for Polish meteorological
rockets. A method for designing dipoles for wind measurements is described
on the basis of the new type (CJ-5/2) of dipole.
(Abstract: "Modification of Dipoles for Rocket Measurements), by Jacek
Walczewski; Warsaw, Wiadom. Sluzby Hydrol. i Meteorol., 5, No. 3, 1969,
pp. 53-59)
/From:
Moscow, Referativnyy Zhurnal, Geofizika, Svodnyy Tom, No. 3, 1970,
3A877
JPRS 504-10, 30 April 70
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