PROGRESS REPORT FOR OCTOBER, NOVEMBER, DECEMBER 1958 TO THE UNITED STATES ATOMIC ENERGY COMMISSION
Technical Report
·
OSTI ID:4233456
Neutron resonance levels in As were obtained using self-detection techniques and transmission measurements. The large, flat detector using the B/ sup 10/(n, alpha ) reaction was successfully operated with the NEVIS velocity spectrometer. The differential cross sections for neutrons elastically scattered from He/sup 3/ are given for energies of 2.6, 5.0, 8.0, and 17.5 Mev. He/sup 3/ (n,p) and He/sup 3/(n,d) cross sections are also given. Preliminary measurements of neutron total cross sections for Pu/sup 239/ U/sup 233/, and U/sup 235/ at0 a 0.1 ev are plotted. A search was made for the double gamma emission predicted in the 0/sup +/-0/sup +/ ground state transition from the 3.35 Mcv state Of Ca/ sup 40/ excited by proton bombardment. An upper limit of 1:1 was placed on the gamma - gamma / pi ratio. A rule was developed for obtaining the relativistic corrections to beta decay spectra from formula for the first forbidden transitions. Measurements of the circular polarization of gamma rays following beta decay were used a determine the longitudinal polarization of electrons from the decay. (For preceding period see CU-178.) (D.E.B.)
- Research Organization:
- Columbia Univ., N.Y. Pupin Cyclotron Lab.; Columbia Univ., N.Y. George B. Pegram Lab.
- NSA Number:
- NSA-13-016290
- OSTI ID:
- 4233456
- Report Number(s):
- CU-184
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ALPHA PARTICLES-- ARSENIC-- BORON 10-- DETECTION-- ENERGY LEVELS-- LOSSES-- MEASURED VALUES-- NEUTRONS-- NUCLEAR REACTIONS-- PLANNING-- RADIATION DETECTORS-- RESONANCE-- SPECTROMETERS-- VELOCITY
BETA DECAY-- CALCIUM 40-- ELECTRONS-- EMISSION-- ENERGY LEVELS-- EXCITATION-- GAMMA RADIATION-- MEASURED VALUES-- NUCLEAR REACTIONS-- POLARIZATION-- PROTON BEAMS-- RELATIVITY THEORY-- SPECTRA-- TRANSIENTS
CROSS SECTIONS-- DEUTERONS-- ENERGY-- HELIUM 3-- MEV RANGE-- NEUTRONS-- NUCLEAR REACTIONS-- PROTONS-- SCATTERING
CROSS SECTIONS-- DIAGRAMS-- EV RANGE-- MEASURED VALUES-- NEUTRONS-- PLUTONIUM 239-- URANIUM 233-- URANIUM 235
PHYSICS AND MATHEMATICS
BETA DECAY-- CALCIUM 40-- ELECTRONS-- EMISSION-- ENERGY LEVELS-- EXCITATION-- GAMMA RADIATION-- MEASURED VALUES-- NUCLEAR REACTIONS-- POLARIZATION-- PROTON BEAMS-- RELATIVITY THEORY-- SPECTRA-- TRANSIENTS
CROSS SECTIONS-- DEUTERONS-- ENERGY-- HELIUM 3-- MEV RANGE-- NEUTRONS-- NUCLEAR REACTIONS-- PROTONS-- SCATTERING
CROSS SECTIONS-- DIAGRAMS-- EV RANGE-- MEASURED VALUES-- NEUTRONS-- PLUTONIUM 239-- URANIUM 233-- URANIUM 235
PHYSICS AND MATHEMATICS