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Se
-3-
February 3, 1955
AFCRO - Ceophysics esearch Directorates
Friday was spent at Bedford with Br. Martell and his group (Junce,
Kilkstein andPrevinsky). The laboratory is gradually taking shape.
Results on Ba!40/gr% in rain parallel Eurodas’ and sre very iupressive.
The use of salt concentrations for normelixing specific activity to air
volume scawenzed is being explored.
Yb710 may possibly be used similarly.
Tritius eaelysis is expected to get underway on stratospheric samples
next summer. Martell hopes to contract with Suase or Yon Buttlar for
low-level triciun.
wh102 hag been detected in three stratoepheric aalysis samples
covering a wide range of latitedes.. Gendenestion suclet counting
and impectors are being used to study natural dust in the troposphere
end atratesphere. This eppears to be a wide open and important field
for study.
Martell and Amge ere now badly in need of wore contract
and equipment funds in order te
sampling get the samples needed to follow up the indications from the
very onsll sumber of seasurenents aesde op fer. Some of the implications
regeuding the fate of bomb debris, troposphere-stratosphere exchange,
chemical reactions in the stratosphere, metecritic accretion, the
origin of natural freezing ouclei and other important questions are
surprising but, eo far, highly speculative.
cc:
Dr. Shilling
Mer. Whitnah
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Form AEC-318 (Rev. 9-3)
2/3/59
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