ATOMIC BEAM MEASUREMENTS OF THE NUCLEAR SPINS OF COPPER-62 AND IRON-59 AND THE HYPERFINE-STRUCTURE SEPARATION OF COPPER-61 AND COPPER-62 (thesis)

Technical Report · Thu Apr 18 04:00:00 EST 1963

OSTI ID:4667956

Dodsworth, B M

The atomic beam magnetic resonance method of the flop-in type using the technique of radioactive detection was employed to measure the nuclear spins of Cu/sup 62/ and Fe/sup 59/ as well as the hyperfine-structure separation ( e (1000 to 2000 /sub /) of Cu/sup 61/, the sign of the moment of Cu/sup 61/, and an improved value for the e (1000 to 2000 of Cu/sup 64/. The magnetic moment of Cu/sup 61/ was calculated from the Fermi-Segre formula, using previously measured values for the e (1000 to 2000 and /sub I/ of Cu/sup 63/. The results of the experimental work, together with calculated values of the nuclear magnetic dipole moments, are presented. The Cu/sup 61/ isotope was produced on the Berkeley 60-inch cyclotron by the reaction Co/sup 59/( alpha ,2n)Cu/sup 61/. The Cu/sup 62/ isotope was also produced on the cyclotron by the decay of Zn/sup 62/ formed by the reaction Ni( alpha ,2n)Zn/sup 62/. Both the Cu/sup 62/ isotopes were chemically separated from the target materials. The Cu/sup 64/ was formed by neutron bombardment of copper in the Livermore and Vallecitos reactors; Fe/sup 59/ was produced by irradiation with neutrons in the ETR reactor in Idaho. Radioactivity in the beam was measured by exposing collectors to the beam and counting these buttons in either sodium iodide crystal scintillation counters or continuousflow methane counters, depending on the mode of decay of the particular isotope. Theory of atomic structure, a description of the experimental apparatus and techniques employed, methods of data analysis, and results are presented. The results are interpreted in terms of simple nuclear shell-model theory. (auth)

• Research Organization: California. Univ., Berkeley. Lawrence Radiation Lab.
• DOE Contract Number: W-7405-ENG-48
• NSA Number: NSA-17-026471
• OSTI ID: 4667956
• Report Number(s): UCRL-10780
• Country of Publication: United States
• Language: English

Related Subjects

ALPHA PARTICLES
ATOMS
BEAMS
COBALT 59
COPPER
COPPER 61
COPPER 62
COPPER 64
COUNTERS
CYCLOTRONS
DECAY
DIPOLES
ETR
FERMI INTERACTION
FERMI-SEGRE FORMULA
HYPERFINE STRUCTURE
IRON 59
IRRADIATION
MAGNETIC MOMENTS
MAGNETIC RESONANCE
MEASURED VALUES
METHANE
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUMERICALS
PHYSICS
RADIOACTIVITY
REACTORS
SCINTILLATION COUNTERS
SHELL MODELS
SPIN
ZINC 62