ENERGY LEVELS IN Ne$sup 20$ FROM THE F$sup 19$(d,n$gamma$)Ne$sup 20$ REACTION

Journal Article · Fri Apr 01 04:00:00 EST 1960 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.118.222· OSTI ID:4139681

Butler, J W

BS>The gamma-ray threshold technique was used with the F/sup 19/(d,n gamma )Ne/sup 20/ reaction to find excited states in the residual nucleus, Ne/sup 20/. Thin targets of CaF/sub 2/ were bombarded with deuterons from a 2-Mv Van de Granff accelerator. Two NaI(TI) crystals (1.75-in. x 1.75-in. and 3-in. x 3-in.) were used in a coincidence arrangement to measure the gamma rays as a function of deuteron energy. Nine gamma-ray or neutron thresholds were found, at bombarding energies of 0.51 plus or minus 0.02, 0.60 plus or minus 0.02?, 0.76 plus or minus 0.02, 0.85 plus or minus 0.02 ?, 1.15 plus Mev. These threshold energies correspond to excited states in Ne/sup 20/ at 11.11 plus or minus 0.02, 11.19 plus or minus 0.02 ?, 11.33 plus or minus 0.02, 11.42 plus or minus 0.02 ?, 11.69 plus or minus 0.02, 11.87 plus or minus 0.02, 12.19 plus or minus 0.02, 12.27 plus or minus 0.02, and 12.51 plus or minus 0.02 Mev, respectively. All of these states decay principally to the ground state of Ne/ sup 20/ except the 11.11-, 11.19-, and 12.27-Mev states, which decay primarily to the 1.63-Mev state. Possible isobaric spin assignments are discussed. (auth)

• Research Organization: U.S. Naval Research Lab., Washington, D.C.
• NSA Number: NSA-14-015300
• OSTI ID: 4139681
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 118; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CALCIUM FLUORIDES
DEUTERON BEAMS
ENERGY LEVELS
ENERGY RANGE
EXCITATION
FLUORINE 19
GAMMA DETECTION
GAMMA RADIATION
GAMMA SPECTROMETERS
ISOSPIN
MEV RANGE
MONOCRYSTALS
NEON 20
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
PARTICLE MODELS
PHOTONS
PHYSICS
SCINTILLATION COUNTERS
SODIUM IODIDES
SPECTRA
TARGETS
THALLIUM
THICKNESS
VAN DE GRAAFF ACCELERATORS