Comparison between the imaging properties of two different types of electrostatic quadrupole doublet lenses

Optik ◽  
2017 ◽  
Vol 140 ◽  
pp. 860-865
Author(s):  
Oday A. Hussein
Keyword(s):  
Quadrupole Doublet ◽  
Different Types ◽  
Imaging Properties ◽  
Electrostatic Quadrupole

Imaging Properties of a Novel Electrostatic Lens

1971 ◽  
Vol 49 (21) ◽  
pp. 2651-2658 ◽  
Author(s):  
E. A. Youssef ◽  
F. E. Vermeulen ◽  
F. S. Chute
Keyword(s):  
Coordinate Plane ◽  
Electrostatic Lens ◽  
System Of Particles ◽  
Imaging Properties ◽  
Electrostatic Quadrupole

A study is made of the imaging properties of an electrostatic quadrupole that has been uniformly twisted about its axis. It is shown that the structure is capable of identically reproducing the injection coordinates and momenta of a system of particles in a coordinate plane which is located some distance along the quadrupole. The imaging takes place with a small amount of aberration. This aberration can be greatly reduced by constructing the lens of two sections which follow each other and which have equal and opposite twists.

Experimental Investigation of the Imaging Properties of a Twisted Quadrupole Lens

1974 ◽  
Vol 52 (5) ◽  
pp. 379-386 ◽  
Author(s):  
F. E. Vermeulen ◽  
F. S. Chute ◽  
E. A. Youssef
Keyword(s):  
Experimental Investigation ◽  
Dust Particles ◽  
Coordinate Plane ◽  
Quadrupole Lens ◽  
System Of Particles ◽  
Imaging Properties ◽  
Electrically Charged ◽  
Electrostatic Quadrupole ◽  
Quadrupole Axis

A study is made of the imaging properties of an electrostatic quadrupole that has been uniformly twisted about its axis. Such a quadrupole has been built, and it is shown experimentally that the quadrupole identically reproduces the injection coordinates and momenta of a system of particles in a coordinate plane which is located some distance along the quadrupole axis. The experiments have been conducted using a beam of electrically charged micron sized dust particles.

Imaging properties of different types of microscopes in combination with an image inversion interferometer

2014 ◽  
Vol 332 ◽  
pp. 301-310 ◽  
Author(s):  
Daniel Weigel ◽  
Holger Babovsky ◽  
Armin Kiessling ◽  
Richard Kowarschik
Keyword(s):  
Different Types ◽  
Imaging Properties

scholarly journals RFQ final-focusing lens at the GSI

1991 ◽  
Vol 9 (4) ◽  
pp. 863-867
Author(s):  
B. Heimrich ◽  
H. J. Laue ◽  
H. Wollnik
Keyword(s):  
Radio Frequency ◽  
Dense Matter ◽  
Quadrupole Doublet ◽  
Heavy Ion ◽  
Ion Beams ◽  
Beam Power ◽  
Radio Frequency Quadrupole ◽  
Small Spot ◽  
Focusing Lens ◽  
Electrostatic Quadrupole

For first investigations of hot dense matter produced by intense heavy-ion beams we built an electrostatic quadrupole doublet that focused Ar+and Kr+ ions of 45 keV/amu after acceleration through the radio frequency quadrupole (RFQ) accelerator at the GSI onto a small spot of approximate area 1 mm2. This beam then deposited a specific beam power of about 1.5 GW/g to targets.

Note: Performance of a novel electrostatic quadrupole doublet for nuclear microprobe application

2018 ◽  
Vol 89 (8) ◽  
pp. 086103
Author(s):  
Jack E. Manuel ◽  
Szabolcs Z. Szilasi ◽  
Todd A. Byers ◽  
Dustin Z. Phillips ◽  
Alexander D. Dymnikov ◽  
...  
Keyword(s):  
Quadrupole Doublet ◽  
Nuclear Microprobe ◽  
Electrostatic Quadrupole

The extinction time of a general birth and death process with catastrophes

1986 ◽  
Vol 23 (04) ◽  
pp. 851-858 ◽  
Author(s):  
P. J. Brockwell
Keyword(s):  
Laplace Transform ◽  
Size Distribution ◽  
Sufficient Conditions ◽  
Necessary And Sufficient Conditions ◽  
Death Process ◽  
Extinction Time ◽  
Birth And Death Process ◽  
Different Types ◽  
The Laplace Transform ◽  
Necessary And Sufficient

The Laplace transform of the extinction time is determined for a general birth and death process with arbitrary catastrophe rate and catastrophe size distribution. It is assumed only that the birth rates satisfyλ0= 0,λj> 0 for eachj> 0, and. Necessary and sufficient conditions for certain extinction of the population are derived. The results are applied to the linear birth and death process (λj=jλ, µj=jμ) with catastrophes of several different types.

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