Now showing items 31-40 of 572
Granite, a new very high energy gamma-ray telescope
(Elsevier, 1990-03)
A international collaboration of astrophysicists plan to construct a new 10-meter diameter gamma-ray Cerenkov telescope at the Whipple Observatory on Mt. Hopkins in Arizona. By operatin in coincidence with the original ...
Gamma-ray spectral imaging using a single-shutter radiation camera
(Elsevier, 1990-12-20)
As part of a program to develop mobile robots for reactor environments, we are developing a radiation-imaging camera capable of operating in medium-intensity (Z scintillator. The raster-scanning camera uses a lead-shielded ...
Solenoid and sextupole optics of ultra-cold atomic hydrogen beams
(Elsevier, 1993-06-20)
Analytic calculations and particle tracking simulations are presented for a polarized atomic hydrogen beam produced by extraction from a superfluid helium coated cell in a large solenoidal magnetic field. Compression of ...
Neutron-capture gamma-ray spectra of the tungsten isotopes
(Elsevier, 1962-06)
The spectra of gamma radiation following reactor-neutron capture in separated tungsten isotopes have been measured with a three-crystal scintillation pair spectrometer as well as with a single-crystal scintillation counter, ...
Curvature and flatness in a Brans-Dicke universe
(Elsevier, 1994-06-27)
The evolution of a universe with Brans-Dicke gravity and nonzero curvature is investigated here. We find solutions to the equations of motion during the radiation dominated era. In a Friedman-Robertson-Walker cosmology we ...
Decay angular distributions of p[pi]- states formed in diffraction dissociation of neutrons on carbon
(Elsevier, 1972-08-01)
We present decay angular distributions of the p[pi]- system formed from the interactions of 25-30 GeV/c neutrons on a carbon target. The data are studied as afunction of t', which allows a partial separation of coherent ...
Multiple Compton scattering gamma ray imaging camera
(Elsevier, 1990-12-20)
With the recent advances in position sensing detectors, a compact, multiple layered, Compton scattering gamma ray imaging camera has been investigated for technological feasibility. Beginning from Kamea and Hanada's recent ...
Diffraction dissociation of neutrons in the reaction dp --> ppp[pi]- at 25 GeV/c
(Elsevier, 1974-09-18)
We observe the reaction dp --> pspec (p[pi]-)p in a bubble chamber exposure at 25 GeV/c incident deuteron momentum. The (p[pi]-) system with invariant mass below 2.0 GeV is interpreted as neutron diffraction dissociation. ...
Recovery and purification of no-carrier-added [18F]fluoride with bistrimethylsilylsulfate (BTMSS)
(Elsevier, 1991)
No-carrier-added trimethylsilyl[18F]fluoride (TMS[18F]F) was rapidly liberated from a variety of dry supports containing unreactive [18F]fluoride by simply heating with neat bistrimethylsilylsulfate. The supports included ...
The performance of "Virtual Phase" CCDs as detectors of minimum-ionizing particles
(Elsevier, 1987-10-01)
The Texas Instruments "Virtual Phase" CCD has been the basis of an ambitious design for a precision vertex detector to be used at the Stanford Linear Collider. The performance of this chip shows promise for future use in ...