/sup 15/N nuclear resonance reaction and hydrogen profile in palladium
The /sup 15/N+/sup 1/H..-->../sup 12/C+/sup 4/He+4.43-MeV (..gamma..-ray) nuclear resonance reaction has been used to study the hydrogen concentration versus depth in Pd. It is a precise method because (1) it has a high depth resolution (approx.50 A); (2) ..gamma..-rays can be detected easily after penetrating low-temperature and vacuum systems; (3) the isolated resonance has an energy of 6.385 MeV with very narrow width (6 keV); (4) the reaction has cross section of 0.46 barn and high sensitivity. In this paper, the principle of the method, the experimental setups as well as the hydrogen distributions in the superconducting Pd(H) prepared under different conditions are discussed. In comparison with the observations on the pressure-charged sample, some new ideas about hydrogen behavior in this kind of superconductor are given.
- Research Organization:
- Department of Physics, Nanjing University, Nanjing
- OSTI ID:
- 5652216
- Journal Information:
- Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 5:2; ISSN CHPHD
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360104* -- Metals & Alloys-- Physical Properties
656102 -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON 12
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
CHEMICAL REACTIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTS
EVEN-EVEN NUCLEI
GAMMA RADIATION
HEAVY ION REACTIONS
HELIUM 4
HELIUM ISOTOPES
HYDROGEN 1 TARGET
HYDROGEN ADDITIONS
HYDROGENATION
INELASTIC SCATTERING
IONIZING RADIATIONS
ISOTOPES
LIGHT NUCLEI
METALS
NITROGEN 15 REACTIONS
NUCLEAR REACTIONS
NUCLEI
PALLADIUM
PHYSICAL PROPERTIES
PLATINUM METALS
RADIATIONS
RESONANCE SCATTERING
SCATTERING
STABLE ISOTOPES
SUPERCONDUCTIVITY
TARGETS
TRANSITION ELEMENTS