Call: AVALANCHE

A String that can contain one or more of the following options:

Option	Meaning	Default
`ABORT-100`	Kills an avalanche at size 100	No
`ABORT-1000`	Kills an avalanche at size 1000	No
`ABORT-10000`	Kills an avalanche at size 10000	No
`ATTACHMENT`	Include attachment	If data present
`NOATTACHMENT`	Don't include attachment	If data absent
`NOPLOT-ELECTRON`	Don't plot electron drift-lines	Yes
`NOPLOT-ION`	Don't plot ion drift-lines	Yes
`NOTOWNSEND`	Don't include multiplication	If data absent
`PLOT-ELECTRON`	Plot electron drift-lines	No
`PLOT-ION`	Plot ion drift-lines	No
`TOWNSEND`	Include multiplication	If data present

The TOWNSEND and ATTACHMENT options can only be selected if the corresponding data has been entered in the gas section.

A plot frame (e.g. with PLOT_DRIFT_AREA) has to be opened before the call to AVALANCHE if you wish to use the PLOT-ELECTRON or PLOT-ION options.

n_electron

Contains on return the Number of electrons produced in the avalanche minus the number of electrons lost via attachment.

This is an optional output parameter. If present, it must be modifiable. The value assigned to this parameter on entry is not used and will be lost after the call.

n_ion

Contains on return the Number of ions produced in the avalanche.

This is an optional output parameter. If present, it must be modifiable. The value assigned to this parameter on entry is not used and will be lost after the call.

formula

A formula that states the quantity that should be entered in the histogram. Each formula can make use of the quantities from one (and only one !) of the following sets:

Information about the location where electron-ion pairs are produced: X_CREATED (or R_CREATED), Y_CREATED (or PHI_CREATED), Z_CREATED, T_CREATED.
Information about the location where electrons are lost through attachment: X_LOST (or R_LOST), Y_LOST (or PHI_LOST), Z_LOST, T_LOST.
Information about the point where electrons end up if they are not lost through attachment: X_E (or R_E), Y_E (or PHI_E), Z_E, T_E.
Information about the point where ions end up X_ION (or R_ION), Y_ION (or PHI_ION), Z_ION, T_ION.

If you wish to have an histogram filled only under certain conditions, then use format: `value,condition` where "value" is the quantity to be entered in the histogram and "condition" the condition under which the quantity should be entered. The "value" part should evaluate to a Number while "condition" should be a Logical.

This argument should be provided in the form of a String. The string is not modified in the call.

histogram

A reference to the Histograms that are to receive the statistics on the avalanche process.

If this argument is of a type other than Histogram, then any storage associated with it is liberated and a new histogram is created with 100 bins and an automatically adjusted range.

You may also give an existing histogram as argument, in which case new entries will be added to it.

This is an optional parameter. Since it is used for output, it should be modifiable.

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