The changes made to the code after the release of the 3^rd version on April 30, 2009

Oct. 10, 2014

• Subroutine print_message has been eliminated (it did not work properly in some cases).

• Diagnostics has been added to the subroutine comp_air.

Dec. 27, 2016

• Additional diagnostics has been introduced in the program f0.for explaining how to generate the starting-point solution for the spot mode on a cathode with an insulated lateral surface.

Jan. 11, 2017

• An option of refining the numerical grid has been added.

• New references and a number of additional clarifications have been added to the tutorial.

March 26, 2017

• Output produced by the program f1.for has been slightly changed.

August 23, 2017

• Hafnium has been added to the database of cathode materials.

• An option of specifying emissive properties of the cathode surface (the work function and the pre-exponential factor in the Richardson-Dushman formula) has been added. This option is particularly useful while working with doped materials (e.g., thoriated tungsten).

April 10, 2020

• A limitation on the temperature of the base of the cathode in the program f0.for was removed. (In previous versions, this temperature could not exceed 500 K.)

• Additional diagnostics has been introduced in the programs f1.for and f1.for.

May 31, 2020

• A minor improvement was made in simulation of multispecies (air, metal halide etc) plasmas.)