Abstract
In a nuclear microprobe the focusing system is an essential component which determines the beam spot size, i.e. the microprobe resolution. A small beam cross section at the target is the most important of the many conflicting requirements imposed on the beam The second most important factor is the current of the beam which at the given brightness is proportional to the phase volume (or emittance) of the beam. Existing microprobes frequently use a triplet or a Russian quadruplet as the focusing systems. This paper describes the numerical studies of some optimal quadrupole lens systems consisting of three or four lenses suitable for use in a nuclear microprobe taking into account geometrical aberrations of third order. The maximum emittance of changed particle beams for these systems has been found. It is shown how the maximum emittance depends on the spot size. 2 refs., 2 figs.
Brazhnik, V A;
Lebed, S A;
Ponomarev, A G;
Storizhko, V E;
[1]
Dymnikov, A D;
[2]
Jamieson, D N;
Legge, S A
[3]
- Ukrainian Academy of Sciences, Sumy (Ukraine). Applied Physics Institute
- University of St Petersburg, Stary (Russian Federation). Institute of Computational Mathematics and Control Processes
- Melbourne Univ., Parkville, VIC (Australia). School of Physics
Citation Formats
Brazhnik, V A, Lebed, S A, Ponomarev, A G, Storizhko, V E, Dymnikov, A D, Jamieson, D N, and Legge, S A.
Numerical studies of triplet and Russian quadruplet quadrupole lens systems with the given spot size on the target, for use in a microprobe.
Australia: N. p.,
1993.
Web.
Brazhnik, V A, Lebed, S A, Ponomarev, A G, Storizhko, V E, Dymnikov, A D, Jamieson, D N, & Legge, S A.
Numerical studies of triplet and Russian quadruplet quadrupole lens systems with the given spot size on the target, for use in a microprobe.
Australia.
Brazhnik, V A, Lebed, S A, Ponomarev, A G, Storizhko, V E, Dymnikov, A D, Jamieson, D N, and Legge, S A.
1993.
"Numerical studies of triplet and Russian quadruplet quadrupole lens systems with the given spot size on the target, for use in a microprobe."
Australia.
@misc{etde_446018,
title = {Numerical studies of triplet and Russian quadruplet quadrupole lens systems with the given spot size on the target, for use in a microprobe}
author = {Brazhnik, V A, Lebed, S A, Ponomarev, A G, Storizhko, V E, Dymnikov, A D, Jamieson, D N, and Legge, S A}
abstractNote = {In a nuclear microprobe the focusing system is an essential component which determines the beam spot size, i.e. the microprobe resolution. A small beam cross section at the target is the most important of the many conflicting requirements imposed on the beam The second most important factor is the current of the beam which at the given brightness is proportional to the phase volume (or emittance) of the beam. Existing microprobes frequently use a triplet or a Russian quadruplet as the focusing systems. This paper describes the numerical studies of some optimal quadrupole lens systems consisting of three or four lenses suitable for use in a nuclear microprobe taking into account geometrical aberrations of third order. The maximum emittance of changed particle beams for these systems has been found. It is shown how the maximum emittance depends on the spot size. 2 refs., 2 figs.}
place = {Australia}
year = {1993}
month = {Dec}
}
title = {Numerical studies of triplet and Russian quadruplet quadrupole lens systems with the given spot size on the target, for use in a microprobe}
author = {Brazhnik, V A, Lebed, S A, Ponomarev, A G, Storizhko, V E, Dymnikov, A D, Jamieson, D N, and Legge, S A}
abstractNote = {In a nuclear microprobe the focusing system is an essential component which determines the beam spot size, i.e. the microprobe resolution. A small beam cross section at the target is the most important of the many conflicting requirements imposed on the beam The second most important factor is the current of the beam which at the given brightness is proportional to the phase volume (or emittance) of the beam. Existing microprobes frequently use a triplet or a Russian quadruplet as the focusing systems. This paper describes the numerical studies of some optimal quadrupole lens systems consisting of three or four lenses suitable for use in a nuclear microprobe taking into account geometrical aberrations of third order. The maximum emittance of changed particle beams for these systems has been found. It is shown how the maximum emittance depends on the spot size. 2 refs., 2 figs.}
place = {Australia}
year = {1993}
month = {Dec}
}