# Analysis of electron dynamics in non-ideal Penning traps

## Abstract

Penning traps that are used for particular applications, such as in ion pump technology, Larmor, bouncing, and diocotron frequencies, can be of the same order of magnitude. The paper deals with the dynamics of electrons confined in such devices starting from the study of the properties of the trajectories. In cases of interest, in which electron-neutral collision frequency is much smaller with respect to the characteristic frequencies of the motion, suitable time averages of the trajectories are introduced in order to simplify the analysis of the problem. In the work, time averages have been calculated in a simple way by using an approximate r-z decoupling of the effective potential. Results obtained with the method are presented and discussed in both linear and nonlinear regimes.

- Authors:

- Dipartimento Energia, Politecnico di Torino, 10129 Torino (Italy)
- Dipartimento di Ingegneria e Fisica dell'Ambiente, Universita della Basilicata, 85100 Potenza (Italy)

- Publication Date:

- OSTI Identifier:
- 22072467

- Resource Type:
- Journal Article

- Journal Name:
- Physics of Plasmas

- Additional Journal Information:
- Journal Volume: 19; Journal Issue: 6; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; APPROXIMATIONS; DECOUPLING; ELECTRON-ATOM COLLISIONS; ELECTRONS; NONLINEAR PROBLEMS; PENNING EFFECT; POTENTIALS; PUMPING; TRAJECTORIES

### Citation Formats

```
Coppa, G., Mulas, R., and D'Angola, A.
```*Analysis of electron dynamics in non-ideal Penning traps*. United States: N. p., 2012.
Web. doi:10.1063/1.4729896.

```
Coppa, G., Mulas, R., & D'Angola, A.
```*Analysis of electron dynamics in non-ideal Penning traps*. United States. doi:10.1063/1.4729896.

```
Coppa, G., Mulas, R., and D'Angola, A. Fri .
"Analysis of electron dynamics in non-ideal Penning traps". United States. doi:10.1063/1.4729896.
```

```
@article{osti_22072467,
```

title = {Analysis of electron dynamics in non-ideal Penning traps},

author = {Coppa, G. and Mulas, R. and D'Angola, A.},

abstractNote = {Penning traps that are used for particular applications, such as in ion pump technology, Larmor, bouncing, and diocotron frequencies, can be of the same order of magnitude. The paper deals with the dynamics of electrons confined in such devices starting from the study of the properties of the trajectories. In cases of interest, in which electron-neutral collision frequency is much smaller with respect to the characteristic frequencies of the motion, suitable time averages of the trajectories are introduced in order to simplify the analysis of the problem. In the work, time averages have been calculated in a simple way by using an approximate r-z decoupling of the effective potential. Results obtained with the method are presented and discussed in both linear and nonlinear regimes.},

doi = {10.1063/1.4729896},

journal = {Physics of Plasmas},

issn = {1070-664X},

number = 6,

volume = 19,

place = {United States},

year = {2012},

month = {6}

}