4.
TE eeER ee
4040
PHYSICS (ASTROPHYSICS AND COSMOLC3")
Refer alse to abstract 1682.
two types, at least: breccla and repoliih. The depth distribution
in these samples of @*Na and “Al was determined, and a compari-
son was made and is discussed. Extrapolating to tho moment of
Cosmic Radiation
Refer alsa to abstracts £4747. 11753-41760, 11777-42773, 11789 —-—
TPOF, £1832, fie ig, 27854. t1OI?, and 41919,
41526
CHEMICAL COMPOSITION OF COSMIC RAYS, IL
Aller, Lawrenee H.
(Univ, of California, Los Angelcs). Sky
Telese.; 45: No, 6, 362-2QJun 1972),
Solar cosmic radiation ts discussed and the origin of primary
cosnie radiation is considered, (W DAD)
41527
ISOTOPIC COMPOSITION AND ELEMENTAL ABCNDANCE OF GALLIUM IN METEQRITES AND IN TERRESTRIAL
SAMPLES,
De Laeter, J. Ro
(Western Australian Inst. of Tech.,
Sauth Bemleyv)., Geochim. C. smochim, Acta; 36: No, 7, 73543(Jut 1972),
The iselopic compeasition of gailiam in sis iren meteorites and
aterrestriad standard were meaecured using a solit-source miss
spectrometer. Tsotopie abundances of meteoritie and terrestrisak
gallium agree fo within e 21%. The concentration of yalliura in
Sliran and | stone meteorites and in 13 standard rocks was uetermined using the method of tsotene ditution. In @feneral, the
ayrecment between this werk and other published data is excellent.
ready
ee
41528
SURVEY OP THE ISOTOPIC AND ELEMENTAL
ABUNDANCE OF 4INC,
Rosmen, Kod, RR,
(Unive of Western
Australia, Perth), Geochim, Cosmochim, Acts Ghy No, 7 >
“Ob-toieal Lavta,
Sonass spectrometric technique applicable to the study of high
ronivaiion petentiil elements was used to investigate the possibility ot natural processes producing variations mi the tsolupie
eomposiiion of gine. No sivnifiesnt variations were detected in
the samples studied.
The fsotenie abundances of the mass td, 66,
67.08 .cind 70 isotopes in terresrrial zine were estimated to be
AM LDU
Us dbo
Oi Pes Oot . and a62 bud
respeortively.
Zine concentrations score determinec in T4 stone,
Tostenverran, aad 20 pron meteorites vind ina large number of
terrestrig] siingls < Gsing setae: blution end atomic uhbsarption
methods, The ranee af concentroviens found in stene meteorites
pod ferrestrigh aeeks is similiar to taat canwiousthy reported, out
for toe
jPorm uneteerites 2 shietiy
Wuseryec
wider concentration rango was
chit’ vfmrqypme, feuth
415295
GAs CMTIENTION CilltoNOLGay OF PETERSBURG
WNOOCOVHER SMETEOUTES.
Pouosek, &, AL
(Califorrre Inst, of
Teek. Pasaderai,
Patel!
teeeeim, Cosmochim,
Veta, of:
Not, Fob-
Woiy
Argon aed Senon cia dre presenti for a thermal release study
em neutron -irsvedhate dd samnte of the cuerite meteorite Petersbure
Nemen she alion correetions are
correbiicr
tothe
s.oterwetios and theo
mace by the method of
peheaonsbip of lunar systematios
oc. stogmities aersived fer the Anges das ler meteorite is
diseus acd. Curreigtton systematics are
abse used in reevaluation
meee = ee
-
{Durham Univ., Eng).
1972).
Nuovo Cim.; 9B:
No. 2, 244-50(11 Jun
The absolute vertical intensity of muons with momentum above
0.58 GeV/c at sca level wags measured and fourd to be (3.22 +
6.10) - 1073 emo? sr7! s7!. This value was ecluse to what would be
expected from recent determinations by Alikofer et al. and wag
significantly higher than the normalization value for a number of
years. By using other absolute measurements in this region of
momentum, the intepral and differential inuon intensities at the
standard momentum of 1 GeV/c were found to be (7.3 #0.40) -
10-3 emsr! stand (3.18 = 17) 107 em? srt gt (ev “ey 4,
respectively. (auth
41532
ELECTRON PARAMAGNETIC RESONANCE OF RADIATION DAMAGEIN A LUNAR ROCK. Tsay, F.; Chan, 5S. 1;
Manatt, S.L.
(Culifornin Inst. of Tech.. Pasacdena). Nature
(Loneon) Phys, $e1.; 237: No. 77, 121-2(19 Jun 1972),
Evidence is reported for radiation indueed EPR signals in an
Apollo lunar rock sample. The results indicate that radiation
damage was less extensive than expected, this waa in agreement
with thermvulumineseence measurements. The presence of bath
eleetron and hele traps was clearly shown, the EPR technique
appears to be more effective than high-temperature thermo-~
luminescence in detecting trapped clectrons and holes with
hinh activation energies. (UK)
41533
LOW FREQUENCY RADIO EMISSION FROM EXTENSIVE AIR SHOWERS.
Allan, HW. R.
(imperial Coll. of science
and Tech., London). Nature (London); 278: No. 3355, 384-5
(16 Jun 1972},
{i is stated that the observed rudio emission from extensive
air showers at frequencies between 30 and 100 MHz is in good
agreement with theory, but at lover frequencies the situation is
much less satisfactory. Theory predicts that the field strength
per unit bandwidth should rise smovthly from zero towards the
observed values at 30 to 10U MHz, but the experimental values
between 2 and 5 MHz are about 10uU times larger. Calculations
intended to set a gencrous upper limit to this field strength are
presented, bused on the least controversial elemcnis of the theory.
(Uis}
41534
ACTIVATION ANALYSIS DETERMINATION OF 40
ELEMENTS IN LUNAR MATERIAL. Brunfelt, 4. 0. (Univ. of
Oslo); Steinnes, EF. Dan. Keri; 53: No. 4, 49-52; 55(1972}.
(In Norwegian).
A neutron-activation scheme for analysis of lunar material
is deseribed. It is possible to determine up to 42 elements on
the pagis of about 400 mg of material. The method is also ap-
plicable to other types of geological material, e.g., meteorites
or core samples from deep sea basins. The scheme was tested
with the standard rock basalt BCR-1 from the US Geolozical
Survey. (B.P.) (Deninark)
of rice ce Ap ana ca mat dedine aftr
41555
DEPENDENCE OF THE COEFFICIENT OF INELAS-~
TICITY ON THE ENERGY OF THE NUCLEON, Akimov, V. V.:
Gricgorov, N. L,; Kozlov, V, D. Izv, Akad. Nauk SSSR, Ser,
Flz.; 35: No. 10, 2040-3(Oct 1971).
(In Russian),
The calculation of the nucleon flux at the atmospheric depth
1000 g - cm7? in the hypothesis that the primary spectrum of
protons, the spectrum of all particles, and the increase of the
invlastic cross section of interaction with increase of energy
from experimental data obtained by the satellite ‘Proton’ does
not azree with other experimental data. it is sufficient to assume a dependence of the covfrictent of inclasticity on the energy
ot the nucleon. (tr-autn
bho oe Tower dimit
7 ae. Bi Tae
ABSOLUTE VERTICAL COSMIC-RAY MUON INTEN41531
SITY AT SEA LEVEL, Ashton, F.; Tevjl, K,; Wolfcendale, A. W,
of oeubran-sactey trom Xenon data for other meteorites in which
shoadiation efi oe dre prominent
2 tes urge has no exeess -7"Xe
diaeateble ton stu deeayoaf Po ofoaee ag Apo 38 ratia corresponding ie onset of senon retention if6
ldo million years atter
The cnoudpipe So Sever’n. Phe areuneita shew substantial loss
ote a
sampling by Luna-16 yielded the following values for average ac-~
tivity in disintegrations/min - kg of sample: for “SAL, 62; for Na,
47. (K.S.W.)
bBo Ar dee of da
-
oOAr plutenu, estab-
deer, relative to an
ee SSuiries
off io
lee yr gor st. Severin. Comparisen with
strentinm cate tor other euerites and tae chondrite Guarena sugpests omocasers:d af 220 million veurs between fractionaticen from
* vubidiiue.-rich reservoir und the tind cooling of Petersburg.
Tae cateminy-wieh achondrite Lafayette has no detectable decay
products ehecther Y8f op 44 pa, indioating a gas- retention formation tine at feast $40 iaiion years after St. Severin. The current
Dest valle. Pthe “4 pr 438 patie in the chondrite St. Severin at the
fame? Us tormdtiend .» O14 + U.0TE, 21%) higher than previausly
TetogPted
cuit.
41530
COSMOGENIC Al AND #Na IN A LUNAR REGOLITH
RECOVERED BY LUNA-16, Vinogradov, A. P.; Lavrukhina,
A.K,; Gorin, V. D.; Ustinova, G.K.
(Inst, of Geochemistry and
_ Analytical Chemistry, Moscow), Dokl. Akad, Nauk SSSR; 2u2,
No, 2, 437-40(11 Jan 1972). dn Russian).
Sagywes of rocw foom pour barge orcas on the visible side of the
Moen, upen indbysis in taboratories on warth, proved ta represent
41536
GAMMA SPECTRA OBTAINED WITH A MULTILAYER
X-RAY CAMERA AT A DEPTH OF 700 gem“,
Amineva, T. P.;
Varkovitskaya, A, Ya.; Dubrovina, S, A.; (and others), Izv. |
Akad, Mauk SSSR, cer. Fiz.; 35: No, 10, 2U49-53(Oct 1974), dn
Rossians.
so
Admnultilayer x-ray camera was used to obtain fhe epectrum
of > quanta oy both the dimpulse and calorimetric lnethods simul4