PROGRESS REPORT FOR JANUARY, FEBRUARY, MARCH 1959 TO THE UNITED STATES ATOMIC ENERGY COMMISSION
Technical Report
·
OSTI ID:4211485
Neutron Physics. The large B/sup 10/(n, alpha )Li/sup 7/ scintillation detector for the 475 kev gamma ray has been improved to take continuous counting rates over 700,000 counts/sec with a 20% resolution for the Cs/sup 137/ line. Design and construction of a scintillation chamber to study mass distribution in U/sup 235/ fission by p-wave neutrons is reported. Operation of the high-pressure gas scintillator for measurement of (n,p) cross section is reported. The useful range of the neutron crystal spectrometer at Brooknaven Reactor was extended. Procedures for obtaining samples of U/sup 235/, U/sup 233/ , and Pu/sup 239/ for cross section measurements are described. Charged Particle Investigations. Cyclotron alterations continued. Angular distribution studies of the Ne/sup 20/(d,n), Fig(d,n) and N/sup 14/(d,n) reactions are reported, along with investigations ofs gamma angular distribution following the ments, production of O/sup 15/ and F/sup 17/ activities for magnetic moment determination, and electric monopole internal conversion in O/sup 16/ and Ca/sup 40/. Theoretical Investigations. The circular polarization of the gamma in coincidence with the BETA from unoriented Co/sup 60/ nuclei was studied. Instrument Development. Brief descriptions are given of work ons 2,000-channel time-of-flight analyzer, Nal crystal detectors for Nevis velocity selector, 10- amp regulated current supply, current integrator, magnet power supplies, and components for automation. Light Particle Investigations. Work on the He/sup 6/ beta-neutrino angular correlation experiment is reported. (For preceding peniod see CU-184.) (T.R.H.)
- Research Organization:
- Columbia Univ., New York. Pupin Cyclotron Lab. and-Columbia Univ., New York. George B. Pegram Lab.
- NSA Number:
- NSA-13-019432
- OSTI ID:
- 4211485
- Report Number(s):
- CU-191
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ACTIVATION-- ANGULAR DISTRIBUTION-- CALCIUM 40-- CYCLOTRONS-- DEUTERON BEAMS-- ENERGY-- FLUORINE 17-- FLUORINE 19-- GAMMA RADIATION-- INTERNAL CONVERSION-- MAGNETIC MOMENTS-- MEASURED VALUES-- NEON 20-- NEUTRONS-- NITROGEN 14-- NUCLEAR REACTIONS-- OXYGEN 15-- OXYGEN 16-- PROTON BEAMS-- TARGETS-- THRESHOLD ENERGY
ALPHA PARTICLES-- BORON 10-- CESIUM 137-- ENERGY RANGE- - GAMMA DETECTION-- KEV RANGE-- LITHIUM 7-- NEUTRON BEAMS-- NUCLEAR REACTIONS-- RESOLUTION-- SCINTILLATION COUNTERS
ANALOG SYSTEMS-- CONTROL SYSTEMS-- CRYSTAL COUNTERS-- CURRENTS-- DIGITAL SYSTEMS-- INSTRUMENTS-- INTEGRATORS-- MAGNETS-- NEUTRON SPECTROMETERS-- PLANNING-- PULSE
PHYSICS AND MATHEMATICS
ALPHA PARTICLES-- BORON 10-- CESIUM 137-- ENERGY RANGE- - GAMMA DETECTION-- KEV RANGE-- LITHIUM 7-- NEUTRON BEAMS-- NUCLEAR REACTIONS-- RESOLUTION-- SCINTILLATION COUNTERS
ANALOG SYSTEMS-- CONTROL SYSTEMS-- CRYSTAL COUNTERS-- CURRENTS-- DIGITAL SYSTEMS-- INSTRUMENTS-- INTEGRATORS-- MAGNETS-- NEUTRON SPECTROMETERS-- PLANNING-- PULSE
PHYSICS AND MATHEMATICS