&DRIFT: SINGLE

f

The functions may use the following variables:

Symbol	Meaning	Note
`X, Y, Z`	Position	R, PHI for polar cells
`EX, EY, EZ, E`	E-field at (x,y,z)	ER, EPHI for polar cells
`BX, BY, BZ, B`	B-field at (x,y,z)	only if there is a B-field
`VDX, VDY, VDZ, VD`	Local drift velocity	VDR, VDPHI for polar cells
`TIME`	Cumulative drift time	-
`PATH`	Cumulative path length	-
`DIFFUSION`	Local long. diffusion	only if data is available
`TOWNSEND`	Local Townsend coeff.	only if data is available
`ATTACHMENT`	Local attachment coeff.	only if data is available
`STATUS`	Drift-line status code	numeric status code

The numeric status code is a number which tells where the particle ended. These codes have a 1-1 correspondence with the status strings which are displayed in regular program output.

[No meaningful default functions are provided.]

PRINT

Requests a printed table of the coordinate and integrated drift time at each step and of the function f3.

[The table is by default not produced.]

PLOT

Requests a graph of function f1, plotted along the y-axis, vs function f2, plotted along the x-axis.

[By default, a graph is not made.]

ELECTRON

The drift-line will be calculated for an electron.

ION

The drift-line will be calculated for an ion.

POSITIVE

The particle which is drifted has a positive charge.

NEGATIVE

The particle which is drifted has a negative charge.

Go to the top level, to &DRIFT, to SINGLE, to the topic index, to the table of contents, or to the full text.

Formatted on 21/01/18 at 16:55.