On the steady-state drift conditions of a water calorimeter in clinical megavoltage photon and electron beams

1984 ◽  
Vol 11 (3) ◽  
pp. 317-320 ◽  
Author(s):  
Hideo Kubo ◽  
Dennis E. Brown
Keyword(s):  
Steady State ◽  
Electron Beams ◽  
Drift Conditions

scholarly journals Asymptotically tight steady-state queue length bounds implied by drift conditions

2012 ◽  
Vol 72 (3-4) ◽  
pp. 311-359 ◽  
Author(s):  
Atilla Eryilmaz ◽  
R. Srikant
Keyword(s):  
Steady State ◽  
Queue Length ◽  
Drift Conditions

Investigation of the Protective Plasma-Facing Graphite In-Vessel Components of T-15MD Tokamak by Steady-State Plasma Loads in the PLM Device and by Powerful Electron Beams

2021 ◽  
Vol 47 (4) ◽  
pp. 345-354
Author(s):  
S. D. Fedorovich ◽  
A. V. Karpov ◽  
V. P. Budaev ◽  
S. A. Grashin ◽  
M. K. Gubkin ◽  
...  
Keyword(s):  
Steady State ◽  
Electron Beams ◽  
Powerful Electron ◽  
State Plasma

Stable Laser-Driven Electron Beams from a Steady-State-Flow Gas Cell

2009 ◽  
Author(s):  
J. Osterhoff ◽  
A. Popp ◽  
Zs. Major ◽  
B. Marx ◽  
T. P. Rowlands-Rees ◽  
...  
Keyword(s):  
Steady State ◽  
Electron Beams ◽  
Steady State Flow ◽  
Gas Cell ◽  
State Flow ◽  
Stable Laser

Materials for Electron Beam Information Storage

1969 ◽  
Vol 27 ◽  
pp. 152-153 ◽  
Author(s):  
D. E. Speliotis
Keyword(s):  
Magnetic Field ◽  
Electron Beam ◽  
Recent Literature ◽  
Electron Beams ◽  
Information Storage ◽  
The Subject ◽  
The Magnetic Field

The interaction of electron beams with a large variety of materials for information storage has been the subject of numerous proposals and studies in the recent literature. The materials range from photographic to thermoplastic and magnetic, and the interactions with the electron beam for writing and reading the information utilize the energy, or the current, or even the magnetic field associated with the electron beam.

Studies on Water in the Hydration Chamber of a Modified Electron Microscope

1970 ◽  
Vol 28 ◽  
pp. 544-545
Author(s):  
R. C. Moretz ◽  
G. G. Hausner ◽  
D. F. Parsons
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Electron Microscope ◽  
Steady State ◽  
Room Temperature ◽  
Small Mass ◽  
Equilibrium Pressure ◽  
Biological Objects ◽  
Mechanical Pump ◽  
Differential Pumping

Use of the electron microscope to examine wet objects is possible due to the small mass thickness of the equilibrium pressure of water vapor at room temperature. Previous attempts to examine hydrated biological objects and water itself used a chamber consisting of two small apertures sealed by two thin films. Extensive work in our laboratory showed that such films have an 80% failure rate when wet. Using the principle of differential pumping of the microscope column, we can use open apertures in place of thin film windows.Fig. 1 shows the modified Siemens la specimen chamber with the connections to the water supply and the auxiliary pumping station. A mechanical pump is connected to the vapor supply via a 100μ aperture to maintain steady-state conditions.

Energy Distribution in Electron Beams

1972 ◽  
Vol 30 ◽  
pp. 568-569
Author(s):  
Tamotsu Ohno
Keyword(s):  
Electron Beam ◽  
Energy Distribution ◽  
Cross Section ◽  
Integral Curve ◽  
Electron Beams ◽  
Electron Gun ◽  
Angular Divergence ◽  
Apparent Increase ◽  
Integral Width ◽  
The Cross

The energy distribution in an electron; beam from an electron gun provided with a biased Wehnelt cylinder was measured by a retarding potential analyser. All the measurements were carried out with a beam of small angular divergence (<3xl0-4 rad) to eliminate the apparent increase of energy width as pointed out by Ichinokawa.The cross section of the beam from a gun with a tungsten hairpin cathode varies as shown in Fig.1a with the bias voltage Vg. The central part of the beam was analysed. An example of the integral curve as well as the energy spectrum is shown in Fig.2. The integral width of the spectrum ΔEi varies with Vg as shown in Fig.1b The width ΔEi is smaller than the Maxwellian width near the cut-off. As |Vg| is decreased, ΔEi increases beyond the Maxwellian width, reaches a maximum and then decreases. Note that the cross section of the beam enlarges with decreasing |Vg|.

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