Method for simulating the incidence of particles or radiation on an object, computer program therefor, computer system for executing the computer program, and use of a computer

A method for simulating an impact of particles or radiation on an object (4), comprising the following steps:

• a) building a simulation volume (6) and the object (4) simulated therein
• by providing a control memory (8) including control memory locations (10) and a mass memory (12) including mass memory locations (14), wherein each mass memory location (14) is assigned a control memory location (10), wherein a mass memory location (14), together with the assigned control memory location (10), describes a particular volume element (7), and wherein the volume elements (7) as a whole form the simulation volume (6);
• and
• by storing at least one control data value in each control memory location (10) and at least one mass data value in each mass memory location (14), wherein the mass data value represents at least a presence and/or the amount of a mass (16) in the respective volume element (7) so that a volume element (7) thus provided with mass is considered to be an object element (5), wherein the control data value reflects at least one element type, a particular element property and/or an energetic state of a respective volume element (7) or of a respective object element (5), and wherein the object elements (5) as a whole form the simulated object (4) having defined geometric dimensions and defined properties;
• b) building at least one simulated individual particle (2) or an individual radiation unit designated for impacting on the object (4), by determining or querying at least one property and/or an energetic state of the individual particle (2) or of the individual radiation unit;
• c) determining at least one property and/or an energetic state of a particular individual particle (2) or a particular individual radiation unit;
• d) carrying out a simulated interaction of the object (4) with the particular individual particle (2) or with the particular individual radiation unit, caused by collision, using at least in part a distribution function (18) of a present location and/or of a velocity of the particular individual particle (2) or the particular individual radiation unit, in such a way that
• at least one object element (5) hit by the individual particle (2) or by the individual radiation unit, is identified, and
• at least one property and/or an energetic state of the individual particle (2) or of the individual radiation unit is determined or queried during the impact on the object;
• e) determining or querying at least one local property and/or a local energetic state of the affected object element (5) at the impact site (46) and/or of the affected object elements (5) in the impact region (48);
• f) determining or querying a collision event caused by the interaction and acting on the individual particle (2), the individual radiation unit and/or the affected object element (5) or volume element (7), at least based on a calculation of an impact force and/or of a penetration depth of the individual particle (2) or of the individual radiation unit into the object (4);
• g) determining a consequence of the collision event at least on the affected volume element (7) and/or object element (5), by determining the control data value and the corresponding mass data value of the hit object element (5), taking a change of a respective mass, of a respective element property and/or of an energetic state into consideration;
• and
• h) storing a newly determined or an unchanged control data value in the corresponding control memory location (10) and a newly determined mass data value in the corresponding mass memory location (14).