Gravitation research
Gravitation research - experimental test of Freundlich red-shift hypothesis and measurement of metastable vs ground-state electron exchange cross sections for helium and neon
HELIUM↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Formation of excited molecular states in the positive column of a helium discharge.
Molecular metastables produced in positive column of helium discharge by electron excitation
ION RECOMBINATION↗
An excitation mechanism for the A super plus laser.
Direct excitation in argon gas from metastable state to upper laser state compared with two-step excitation
METASTABLE ATOM↗
Auto-ionizing states in the alkali atoms with microsecond lifetimes.
Energy level behavior of metastable alkali atoms against autoionization and radiative decay
RADIOACTIVE DECAY↗
Lamb shift in the
Energy difference between metastable levels of hydrogen-like atom determined by measuring lifetime in electrostatic field, yielding average Lamb shift in Li ion
STARK EFFECT↗
Present status of lithium-diffused silicon solar cells.
Spontaneous annealing models of lithium- diffused Si solar cells, discussing defect compensation and metastable defect formation
SOLAR CELL↗
LOW FIELD HELIUM MAGNETOMETER FOR SPACE APPLICATIONS
Measurement of low magnetic fields using a magnetometer which utilizes the optical pumping of metastable helium atoms
MAGNETOMETER↗
Suppression of excited species from sputter-ion pump by a zeolite trap.
Zeolite trap of migrating photon radiated by metastable argon atoms from sputter ion pump to ion collector
PHOTON-ELECTRON INTERACTION↗
Visible spectrum absorption cross section of Cr super 3 super plus in the super 2 E state of pink ruby.
Visible spectrum absorption cross section of trivalent chromium in metastable 2E state of pink ruby
CHROMIUM↗
Atomic physics
Atomic research on metastable atoms, resonance spectroscopy, and collision phenomena
NUCLEAR PHYSICS↗
Superplasticity and low-temperature ductility in a Cr-30 at. pct Co alloy.
Superplastic effect in cr-30 at. pct Co alloy, noting low temperature bend ductility in quenched metastable single phased and near equilibrium conditions
MECHANICAL PROPERTY↗
Enhancement of ion cyclotron waves in hydrogen helium mixtures
Metastable helium atom addition to hydrogen plasma for ion cyclotron mode enhancement
Hettel, H. J.↗
Surface-spike growth on NiBr sub 2 crystals - A VLS mode of crystal growth.
Droplets associated with surface-spike growth of crystals of NiBr 2 by sublimation have been analyzed and found to contain Cu, Co, Mn, and Fe in addition to Ni and Br. These elements exist in the bulk of the original charge material in concentrations that are several orders of magnitude lower than that in the droplets. During crystal growth by sublimation the impurities collect on the surface of growing crystals, until sufficient concentrations are reached to cause the nucleation of a metastable liquid phase droplet. Once the liquid phase droplets have been nucleated, they may then become attached to growth steps and produce accelerated growth from these sites. Such processes occur in NiBr 2 , during growth by sublimation, at approximately 500 °C below the melting point of NiBr 2 .
Edward N Sickafus↗
Meteor ion spectra.
Ionic spectral lines emitted by vapors of high and low velocity meteoroids, investigating excited ions and metastable molecules production reactions
Hoffman, H. S.↗
Mass spectrometry in structural and stereochemical problems. CXLVIII - Electron impact induced fragmentations of some cyclic sulfites and carbonates.
Mass spectrometry of cyclic sulfites and carbonate esters, analyzing electron impact induced fragmentations and metastable ion characteristics based on deuterium labeling
Brown, P.↗
Rectangular-bore, high-gain laser plasma tube
Rectangular-bore tube improves population inversion obtained from upper and terminal laser states, resulting in a significant increase in unsaturated gain factor. Radial field produces efficient pumping of upper laser state. Narrow tube dimensions cause increased diffusion flow of neon is metastable states to tube walls.
Mollo, R. A.↗
Negative ion stability calculations Final report
Metastability calculations of energy states of nitrogen negative ion
Harris, F. E.↗
Nondestructive examination of surfaces with neutral atom probes Semiannual progress report
Surface property observation using scattered beams of metastable atoms and molecules
Donnelly, D. P.↗