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A study of the gamma rays produced by the bombardment of deuterium with protonsCritoph, Eugene January 1955 (has links)
The energy of gamma rays from the reaction H² (p,γ)He³ has been measured as a function of incident proton energy in the range of proton energies from 1 to 2 Mev. The results were consistent with the assumption that the He³ is left in the ground state.
The Doppler shift in gamma ray energy was measured for incident protons of energies 1 Mev. and 1.7 Mev. and was found to be consistent with the value calculated assuming that the He³ was not slowed down before emission of the gamma ray. This puts an upper limit on the lifetime of the intermediate state of 2 x 10⁻¹² sec.
The angular distribution of gamma rays at an incident proton energy of 1.75 Mev. was of the form sin²θ + (.025 ± .007), and at incident proton energy of 1.00 Mev. was of the form sin²θ + (.043 ± .008).
The excitation function, over a range of incident proton energies from 0.25 to 1.85 Mev., is fitted by a function of the form AEp⁰•⁶⁵. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Magnetic resonance studies of atomic hydrogen gas at liquid helium temperaturesWhitehead, Lorne Arthur January 1979 (has links)
Pulsed magnetic resonance studies are reported for a gas
of hydrogen atoms at densities of 3-10¹³ X 10 cm⁻³ and temperatures
of 4.2-77 K. The gas was produced by dissociation in a room temperature R.F. discharge, and piped through glass tubing into the cryogenic apparatus for study. The magnetic resonance transition observed is between the two lowest hyper-fine levels of the 1s atom in a magnetic field of 6481 Gauss where this splitting has its minimum value of about 765.5 MHZ.
At 77 K, spin-exchange broadening of the resonance is observed. By varying the number density of hydrogen atoms, the ratio of spin-exchange broadening to atomic hydrogen density is obtained, and from this ratio the spin-exchange cross section for this transition is calculated. The cross section obtained is 60% of the theoretical value.
At liquid helium temperatures, the spin-exchange cross
section is shown to be at least 15 times smaller than that at
liquid nitrogen temperatures, as. predicted by theory. He⁴
and H₂ buffer gases . are used to limit the diffusion broadening
of the resonance, allowing the observation of small frequency
shifts of the free induction signal. A model is proposed in
which interactions of the hydrogen atoms with the flow tube walls
cause these shifts. From the diffusion broadening of the
resonance, the diffusion cross sections for H in He⁴ at 4.2 K and H in H₂ at 5-9 K
are inferred to be 500 Ų and 250 Ų respectively. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Charge exchange of stopped π⁻ in deuteriumMacDonald, Randy Neil January 1977 (has links)
By using a pair of large Nal spectrometers in a coincidence configuration we have observed the charge exchange of stopped π⁻ in deuterium
π⁻ + d → 2n + π°.
We have measured the branching ratio of this reaction [equation omitted]
and find
R = (1.45 ± 0.19) x 10⁻⁴.
This measurement is the first observation of pion charge exchange at rest in deuterium and represents an increase in sensitivity of a factor of 40 over previous measurements. The measured value of R agrees well with the recent theoretical result of Beder(1.39 x 10⁻⁴ ≤ R ≤ 1.59 x 10⁻⁴). / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Coherent K̊ -regeneration in hydrogen and deuterium from 4 to 10 GEVCRippich, Christoph Gustav. January 1975 (has links)
No description available.
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Investigation of the interactions of He³ and d with Np²³⁷ /Polishuk, Paul January 1964 (has links)
No description available.
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The mechanism of the tritium beta-ray induced exchange reactions of deuterium with methane and ethane in the gas phase /Lawrence, Robert H. January 1966 (has links)
No description available.
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An investigation of structure in para- and ortho-liquid Deuterium by neutron scattering : a dissonance analysis /Talhouk, Sami Jamil January 1966 (has links)
No description available.
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Attempted syntheses of 1, 5-naphthoquinones, the 3,2,1-bicyclic mechanism, and the deuterium exchange of [alpha]-diazoketones /Darré, Bernard John January 1966 (has links)
No description available.
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The structures of solid deuterium above and below the [lambda]-transition as determined by neutron diffraction /Mucker, Kenneth Frank January 1966 (has links)
No description available.
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The nonideality of liquid and solid orthopara deuterium solutions from vapor pressure measurements /Meckstroth, Wilma Koening January 1968 (has links)
No description available.
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