For an ion source, the maximum half-angle of ion emission from the source is 13 milliradians. The source is biased to 9 kV and the aperture radius is 2.5 mm. Assuming uniform emission of the aperture and uniform distribution of particles over this range, what is the normalized emmitance from the source if the beam consist of ions 40 Ar 9+?

For an ion source, the maximum half-angle of ion emission from the source is 13 milliradians. The source is biased to 9 kV and the aperture radius is 2.5 mm. Assuming uniform emission of the aperture and uniform distribution of particles over this range, what is the normalized emmitance from the source if the beam consist of ions 40 Ar 9+?

University Physics Volume 3

17th Edition

ISBN:9781938168185

Author:William Moebs, Jeff Sanny

Publisher:William Moebs, Jeff Sanny

Chapter7: Quantum Mechanics

Section: Chapter Questions

Problem 90CP: In STM, an elevation of the tip above the surface being scanned can be determined with a great...

See similar textbooks

Similar questions

For a given beam current and target thickness, why would you expect a tungsten target to produce a higher x-ray intensity than targets of molybdenum or chromium?
A point source emitting 2.1×1012 gamma-rays per second is located at the center of an ironsphere of radius 10 cm. The gamma-rays have an energy of 1.0 MeV. What is the uncollidedgamma-ray flux in cm-2-s-1 at a distance 20 cm from the source, assuming the sphere issurrounded by a vacuum?
For a He-Ne laser at 1 m and 2 m distances from the laser the output beam spot diameters are 4mm and 6mm respectively, calculate the divergence and explain?
What is the half-value layer (HVL) for a material with attenuation coefficient of 0.7/cm?
An unknown material was ground to a fine powder and subjected to x-ay diffraction measurement using a Bruker V8 system with Cukα radiation with wavelength λ= 1.452 Å. The following 2θ values were recorded: 28.5o, 47.4o, 56.1o, 28.5o, 69.1o, and 76.2o. Calculate the d spacing associated with each peak and Identify the miller indices for each XRD peak.Calculate the lattice parameter of this material assuming that it has a cubic structure then state what is this material.
In laser eye surgery, the laser emits a 1.45-ns pulse focused on a spot that is 32.5 mm in diameter. (a) If theenergy contained in the pulse is 2.95 mJ, what is the power persquare meter (the irradiance) associated with this beam? (b) Suppose a molecule with a diameter of 0.500 nm is irradiated by thelaser beam. How much energy does the molecule receive in onepulse from the laser? (The energy obtained in part (b) is more thanenough to dissociate a molecule.)
At 293 K, the Bragg angle for X-ray peak (111) from a powdered gold metal specimen is 38.30o. If the same peak is detected at 493 K, calculate the angle. Assume gold metal has a coefficient of linear thermal expansion of 14.2 x10-6 K-1 and a length of 0.47 nm for its standard FCC unit cell.
During the deep X-ray therapy high energy X-rays are used. They are filtered by passing themthrough copper and aluminium plates. If the copper plate has thickness ?1 = 1 mm and aluminiumplate ?2 = 5 mm, find reduction in X-ray beam intensity. Linear attenuation coefficients for copperand aluminium are ?1 = 0,32 cm –1, and ?2 = 0,15 cm –1, respectively.
Show that the hydrostatic equation and gradient Richardson number are dimentionless.
A laser pulse of energy 4 mJ and the pulse duration 1.5 ns is focused on a target of radius 0.02 mm. What is the laser intensity?
If a number of little droplets of water of surface tension T , all of the same radius r, cobmine to form a single drop of radius R and the energy released is converted into kinetic energy , find the velocity acquired by the bigger drop.
Using the given charge-to-mass ratios for electrons andprotons, and knowing the magnitudes of their charges areequal, what is the ratio of the proton’s mass to the electron’s?(Note that since the charge-to-mass ratios are given to onlythree-digit accuracy, your answer may differ from theaccepted ratio in the fourth digit.)