Average energy, average velocity and mean free path of slow electrons in helium and argon

1964 ◽  
Vol 17 (3) ◽  
pp. 387-393 ◽  
Author(s):  
O. J. Orient
Keyword(s):  
Free Path ◽  
Average Velocity ◽  
Average Energy ◽  
Mean Free Path ◽  
Slow Electrons ◽  
Energy Average

Inelastic mean free path from reflectivity of slow electrons

2013 ◽  
Vol 87 (7) ◽  
Author(s):  
R. Zdyb ◽  
T. O. Menteş ◽  
A. Locatelli ◽  
M. A. Niño ◽  
E. Bauer
Keyword(s):  
Free Path ◽  
Mean Free Path ◽  
Slow Electrons ◽  
Inelastic Mean Free Path

High-energy pion interactions

1968 ◽  
Vol 46 (10) ◽  
pp. S655-S659 ◽  
Author(s):  
C. B. A. McCusker ◽  
L. S. Peak ◽  
R. L. S. Woolcott
Keyword(s):  
Free Path ◽  
Average Energy ◽  
Mean Free Path ◽  
High Energy ◽  
Average Multiplicity ◽  
Multiple Collision ◽  
Average Value ◽  
Narrow Angle ◽  
Pion Interaction ◽  
Primary Jets

In this paper the results of a line scan of 640 cm of narrow-angle secondary tracks (EPt > 100 GeV) from proton primary jets in emulsions are presented. The proton component was eliminated by disregarding the smallest-angle track unless there was clear evidence that it did not represent a proton. The energy of each pion interaction found was estimated by the following procedure. The various energy estimators were modified to take account of multiple-collision events and then the energy and inelasticity which gave the closest agreement between the energy estimators E(charged), E(median), E(Castagnoli), E(quartile), and Ept were used.The π-meson mean free path was found to be 40 cm (~26 mb) at an average energy of 450 GeV. The average multiplicity of the sample (of pion interactions) was found and shown to be consistent with a log E dependence. The average value of Nh was found and contrasted with previous results at lower energies. The results also show that on the average one pion carries away ~40% of the incident energy.In tracing the above path-length seven examples of direct pair production were identified giving a mean free path of 90 cm.

DETERMINATION OF THE MEAN FREE PATH OF SLOW ELECTRONS BY THE MEASUREMENT OF BACK-DIFFUSION IN HELIUM AND ARGON

1965 ◽  
Vol 43 (3) ◽  
pp. 422-431 ◽  
Author(s):  
O. J. Orient
Keyword(s):  
Energy Distribution ◽  
Free Path ◽  
Electron Energy ◽  
Field Intensity ◽  
Mean Free Path ◽  
Back Diffusion ◽  
Test Device ◽  
The Mean ◽  
Slow Electrons

In the theoretical examination of back-diffusion Varney found a relationship between the extent of the back-diffusion of electrons starting from the cathode and the distance to the cathode. When adequate conditions are ensured the dependence of back-diffusion on distance permits the determination of the mean free path of the electrons. A test device has been developed to measure back-diffusion as a function of the distance to the cathode, for electrons that have an energy distribution corresponding to the specified pressure and the field intensity. From the dependence on distance, mean free paths for helium and argon gases in the range from X/p = 0.5 volt/cm. mm Hg to X/p = 5 volts/cm. mm Hg have been determined. The results are in fair accordance with the mean free paths computed by Barbiere from electron-energy distribution values. Variances have been found, however, with Townsend's and Bailey's data, particularly in the case of argon, where the free path of electrons depends greatly on velocity.

Inelastic mean free path and phase-shift determinations in NiO, using EXELFS

1993 ◽  
Vol 3 (7) ◽  
pp. 1649-1659
Author(s):  
Mohammad A. Tafreshi ◽  
Stefan Csillag ◽  
Zou Wei Yuan ◽  
Christian Bohm ◽  
Elisabeth Lefèvre ◽  
...  
Keyword(s):  
Phase Shift ◽  
Free Path ◽  
Mean Free Path ◽  
Inelastic Mean Free Path

The measurement of mean free path λs using a slowing down time lead spectrometer in the 1–10 eV energy region

1968 ◽  
Vol 22 (4) ◽  
pp. 261-262
Author(s):  
M.P. Navalkar ◽  
K. Chandramoleshwar ◽  
D.V.S. Ramkrishna
Keyword(s):  
Free Path ◽  
Energy Region ◽  
Mean Free Path ◽  
Slowing Down ◽  
Time Lead

scholarly journals Controllable transport mean free path of light in xerogel matrixes embedded with polystyrene spheres

2009 ◽  
Vol 17 (9) ◽  
pp. 6975 ◽  
Author(s):  
Boris P. Bret ◽  
Nuno J. Couto ◽  
Mariana Amaro ◽  
Eduardo J. Nunes-Pereira ◽  
Michael Belsley
Keyword(s):  
Free Path ◽  
Mean Free Path ◽  
Polystyrene Spheres
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