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James Van Allen journal, 1951?-December 1954
Page 79
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Tritium in Zirconium target from Oak Ridge (for sale!) [red and blue boxed below here:] Good job for Iowa. -- Measure 14 Mev. neutron cross-sections for throughout the periodic table -- Also interest in region of major [number?] nuclei? etc. [red and blue boxed above here] d-t neutrons. -- Maximum yield about 200 Mev [Argo?] etc. (see above) ---------------------------------------------------------------------- Also (p + t ------> gamma) (monochromatic ~22 Mev) -----> (d + gamma, sigma) photo at 22 Mev. Use single counter or Lauritsen type intensity measurement. ---------------------------------------------------------------------- (see above) Betatrons have done other photo cross-sections. -------------------------------------------------------------------- [red pencil circled below here:] Absolute value of specific ionization [versus?] energy for mesons using scintillators ala Hofstadter. [red pencil circled above here]
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Tritium in Zirconium target from Oak Ridge (for sale!) [red and blue boxed below here:] Good job for Iowa. -- Measure 14 Mev. neutron cross-sections for throughout the periodic table -- Also interest in region of major [number?] nuclei? etc. [red and blue boxed above here] d-t neutrons. -- Maximum yield about 200 Mev [Argo?] etc. (see above) ---------------------------------------------------------------------- Also (p + t ------> gamma) (monochromatic ~22 Mev) -----> (d + gamma, sigma) photo at 22 Mev. Use single counter or Lauritsen type intensity measurement. ---------------------------------------------------------------------- (see above) Betatrons have done other photo cross-sections. -------------------------------------------------------------------- [red pencil circled below here:] Absolute value of specific ionization [versus?] energy for mesons using scintillators ala Hofstadter. [red pencil circled above here]
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