... Title : ACCELERATED METHOD OF MEASURING THE CONCENTRATION OF NATURAL AEROSOLS IN A SOLID DISPERSION PHASE WITH ...
DTIC Science & Technology
... ACCELERATED METHOD OF MEASURIEG THE CONCENTRATION OF I-AT�RJAL AEROSOLS IN A SOLID DISPERSION PEIASE WITH HIGH ...
A methodical investigation and measurement of human dynamic response to impact acceleration was conducted. Linear accelerations were measured on the top of the head, at the mouth, and at the base of the neck. Angular velocity was also measured at the base...
National Technical Information Service (NTIS)
Through a literature study, approximately fifty methods of measuring moisture were investigated to ascertain a suitable method for use in measuring moisture changes in 6 inch by 12 inch concrete cylinders cured by the autogenous accelerated curing method....
... CORRECTIONS FOR THE EFFECT OF HORIZONTAL ACCELERATIONS AND INCLINATIONS,. ... measured, and the angles of the inclination of the ...
... measurements are presented. Methods of obtaining low density plasmas suitable for plasma betatrons are described. In addition ...
measuring methods, such as the dilution plate method or counting methods ... growth-accelerating effects of Azotobacterinoculationwhich are ...
NASA Website
... Winkler, E �, "Comparison of Methods for Measuring ... the powerfulness of the method in accelerating ... and Kulishek, CJ, "Geometric and Aerodynamic ...
acceleration level) are typically measured during the science missions to characterize ... acceleration measurement instrument. Measuring the acceleration ...
With a view to determining the deformations and displacements of the ring foundation of the ITEP accelerator, the method of very accurate distance measurements by means of invar wires and strips is described. Measurement errors are analyzed. This method h...
The perspectives are discussed of the measurements for the charge radii and nuclear moments by the laser resonance spectroscopy methods on the beams of the accelerated radioactive nuclei. The calculations are performed of the isotopic shifts and hyperfine...
The paper describes several methods and techniques for measuring tritium surface contamination in reactor, accelerator, and tritium oxide environments. The problems associated with the presently used method of windowless flow proportional counting are dis...
This guide's purpose is to systematize vibration measurement procedures and to promote uniformity and clarity between the measurement techniques employed by Government and contractor laboratories. This includes the instrumentation, techniques, and methods...
... Accelerators and Colliders; Beam Dynamics; Applications and New Methods of Acceleration; New Methods; Linear Accelerators and Pulsed Power ...
A new possible method to measure in lab the gravitational acceleration ''g'' of the antiproton is presented assuming that very low energy particles can be used. A schematic lay-out is described and preliminary results on ''g'' obtained by a simple simulat...
A method is suggested for measuring the accelerated particle distributions by radial-phase oscillation amplitudes. Experimental distribution measurements, and the derived half-width dependence of the accelerated cluster on energy and switching time is in a good agreement with theoretical ...
Energy Citations Database
Using the method of albedo dosimetry, the neutron and photon dose and the mean (effective) neutron energy has been determined in the radiation fields of four different electron accelerators (two linear accelerators, two betatrons). Thermoluminescence-dose...
Optical methods have many advantages in the beam measurement of particle accelerators. We use transition radiation and Cerenkov Radiation to measure the beam of Dragon-I linear induction accelerator. Beam profile, beam emittance, beam energy and energy dispersion are ...
NASA Astrophysics Data System (ADS)
We have developed a new method for measuring the electromagnetic fields (wake fields) induced in high-frequency accelerating devices by intense relativistic electron bunches. These fields are probed by a second collinear electron bunch which follows the primary bunch at a variable delay. Initial results for several iris-loaded rf ...
A tomographic diagnosis method was developed to systematically resolve the injection and acceleration processes of a monoenergetic electron beam in a laser-wakefield accelerator. It was found that all the monoenergetic electrons are injected at the same location in the plasma column and accelerated from 5 to 55 MeV ...
Some results of high-energy neutron spectrum measurements in different radiation fields outside accelerator shielding are presented. The spectra have been unfolded by the statistical regularization method on data of a deviece intended for measurements of ...
A magnetic analyzer and the methods of partial and total absorption in foils are used to measure the energy spectrum of high-current electron beams in experiments on the Impulse accelerator.
An accelerated study was conducted into the methods and measures for controlling hazardous substances to prevent their discharge, the most appropriate measures for enforcement, and recovery of costs if removal is undertaken by the United States. Water, ai...
Coherent transition radiation is used to measure the length of the ultra-short electron bunches available at the Stanford Linear Accelerator Center. The results and the limitations of the method are described.
In the past, Earth�s gravitational acceleration g has been measured in many ways, including the use of a pendulum as well as other models involving the use of a mass and a spring. We have designed a new method incorporating a spring with a capacitor and a voltmeter. This capacitor model still uses a hanging mass on a spring, but ...
An improved method of determining corrections for the effect of horizontal accelerations and tilting during gravimetric measurements in motion using instruments mounted on a gyrostabilized platform with a pendulum system for corrections is improved. The g...
... Title : ACCELERATION OF THE CONVERGENCE OF THE KACZMARZ METHOD AND ITERATED HOMOGENEOUS TRANSFORMATIONS. ...
Provide acceleration measurement systems that meet the requirements of the researchers on ... SAMS measures the acceleration environment in the 0.01 to ...
The accuracy of new simple method of design calculation for neutron shielding in medical and industrial electron accelerator facilities, described in the preceding paper, is investigated in this work by comparing with the measured data in the actual facilities. For this comparison, several published data which have been ...
PubMed
Radioactivation of Sulfur-32. ASTM E 526. - Standard Method for Measuring Dose for Use in Linear Accelerator Pulsed Radiation. Effects Tests. ASTM E 666 ...
... Descriptors : *ACCELEROMETERS, *LINEAR ACCELERATORS, USSR, DYNAMICS, IMPACT SHOCK, TRANSLATIONS, ACCELERATION ...
... Descriptors : *ELECTRON ACCELERATORS, *SOLIDS, DESIGN, LINEAR ACCELERATORS, MEASUREMENT, PHYSICAL PROPERTIES. ...
The Space Acceleration Measurement System II (SAMS-II) measures accelerations ... To complement the SAMS-II measurements, the Microgravity Acceleration ...
A measuring system at the table-top scale was developed for RF measurements of a muffin-tin accelerating structure operating at 32 times the SLAC frequency (2.856 GHz). Both perturbation and non-perturbation methods are employed to characterize the RF properties of a muffin-tin structure. Conventional bead pull ...
We begin this report by reviewing the theoretical foundations of a method to predict the amount of sound radiated by a baffled flat plate. The method uses measurement of the peripheral acceleration field to calculate the value of the sound. In the second ...
The Brookhaven National Laboratory Accelerator Test Facility comprises a 50 MeV traveling wave electron linear accelerator utilizing a high gradient, photo-excited, raidofrequency electron gun as an injector and an experimental area for study of new acceleration methods or advanced radiation sources using free ...
The role of force measurements in vibration testing is discussed. The rational for a vibration test based on the extremal control of force and acceleration is developed. The differences between force measurements in vibration testing and modal testing is discussed. Several methods for estimating the input force in ...
DOE Information Bridge
The measurement of the longitudinal coupling impedance of an accelerator component by coaxial wire methods is discussed. Potential errors intrinsic to this method are pointed out and analyzed. It is concluded that measurements using the transmission rather than the reflection coefficient are ...
The method for measuring thresholds and nominal values of RF fields in the linac cavities is proposed. Some peculiarities of measuring these parameters are considered. The threshold values of RF fields in the accelerator initial part (AIP) are measured. b...
A measuring technique for velocity, acceleration and distance of rail vehicles is discussed. Velocity and distance are derived directly from an optical digitally encoded sensor. A low noise differentiation method allows very small accelerations of rail ve...
The use of an ultracold neutron interferometer incorporating an electrostatic accelerator having a strong electric field gradient to accelerate neutrons by their possible electric dipole moment is proposed as a method of measuring the neutron electric dipole moment. The method appears to have ...
... Title : Measurement of Acceleration Using an Instrumented Railgun Projectile. ... Railgun, Electromagnetic Launcher, Electromagnetic Acceleration. ...
Supports PIs by mapping acceleration environment on multiple platforms: ... SAMS - II - The Acceleration Measurement System for mapping ...
Multi megawatt accelerators can deliver sufficient power to a target to destroy it in a few pulses. In order to look at the response of solid and liquid targets under these high power pulses, we are developing optical methods of measuring surface deformat...
Accelerator grid sputter erosion resulting from charge-exchange-ion impingement is considered to be a primary cause of failure for electrostatic ion thrusters. An experimental method was developed and implemented to measure erosion characteristics of ion-...
Accelerator mass spectrometry is an isotopic ratio method that can estimate the concentrations of long-lived radioisotopes such as carbon-14 and calcium-41, making it useful in biochemical and physiological research. It is capable of measuring radio-labeled nutrients and their metabolites in attomol...
Technology Transfer Automated Retrieval System (TEKTRAN)
Unconsciousness resulting from exposure to increased levels of head-to-foot (+Gz) acceleration stress (501 unconsciousness episodes) on a human centrifuge in asymptomatic, healthy subjects was investigated. A method for quantitatively measuring the kineti...
Laser irradiated targets are ablatively accelerated to velocities near those required for fusion pellet implosions while remaining relatively cool and uniform. The target velocities and velocity profiles are measured using a double-foil method, which is d...
