Quick launch:
Last version:
News:
--
Fluka Release
|
[ <--- prev -- ] [ HOME ] [ -- next ---> ] RADDECAYrequests simulation of radioactive decays and sets the corresponding
biasing and transport conditions
WHAT(1) = flag for activating radioactive decays = 1: radioactive decays activated for requested cooling times > 1: radioactive decays activated in semi-analogue mode = 0: ignored < 0: reset to default Default = no radioactive decays WHAT(2) = flag for "patching" isomer production, while waiting for a better production model > 0: isomer production "patching" activated < 0: isomer production "patching" disabled = 0: ignored Default: activated if non-analogue radioactive decays is requested, disabled otherwise WHAT(3) = number of "replicas" of the decay of each individual residual = 0: ignored < 0: reset to default Default: 1 for analogue decays, 3 otherwise WHAT(4) = switch for applying various biasing features only to prompt particles, or only to particles originated in radioactive decays, or to both > 0.0: a 9-digit number äbcdefghi", where each ä-i" digit is interpreted as follows (but see Note 4): 0.0 = ignored 1.0 = the corresponding biasing is applied to prompt radiation only 2.0 = applied to decay radiation only 3.0 = applied to both prompt and decay radiation and the digit position is interpreted as follows: a = hadron/muon interaction length or decay biasing, as defined by command LAM-BIAS b = hadron/muon leading particle biasing (not defined at the moment) c = hadron/muon importance and Weight Window biasing, as defined by commands BIASING and WW-FACTOr d = e+/e-/gamma interaction length biasing, as defined by command EMF-BIAS e = e+/e-/gamma leading particle biasing, as defined by command EMF-BIAS f = e+/e-/gamma importance and Weight Window biasing, as defined by commands BIASING and WW-FACTOr g = low-energy neutron biased downscattering, as defined by command LOW-DOWN, and non-analogue absorption, as defined by LOW-BIAS h = no meaning for the time being i = low-energy neutron importance and Weight Window biasing, as defined by commands BIASING and WW-FACTOr = 0.0: ignored < 0.0: reset to default Default: all biasing is applied to prompt showers only (equivalent to 111111111.) WHAT(5) = multiplication factors to be applied to e+/e-/gamma transport energy cutoffs, respectively for prompt and decay radiation > 0.0: a 10-digit number xxxxxyyyyy, where the first and the last 5 digits are interpreted as follows (see Note 5): xxxxx * 0.1 = transport energy cutoff multiplication factor for beta+, beta- and gamma decay radiation yyyyy * 0.1 = transport energy cutoff multiplication factor for prompt e+, e- and gamma radiation = 0.0: ignored < 0.0: reset to default Default: e+, e- and gamma transport energy cutoffs are unchanged: the multiplication factors are set = 1.0 for both prompt and decay radiation (equivalent to 0001000010.) WHAT(6) = flag for generating beta+/beta- spectra with Coulomb and screening corrections. > 0.0: Coulomb and screening corrections activated = 0.0: ignored < 0.0: Coulomb abd screening corrections ignored Default: Coulomb and screening corrections are considered SDUM = not used Default (option RADDECAY not given): no radioactive decay is activated, and no multiplication factors are applied to transport energy cutoffs Notes:
Example: * In this example, radioactive decays are activated for requested cooling * times, with an approximated isomer production. Each radioactive nucleus * produced will be duplicated. *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 RADDECAY 1.0 1.0 2.0 111000. 200. * Any biasing of electrons, positrons and photons is applied only to * prompt particles in the electromagnetic shower, and not to beta and * gamma particles from radioactive decay. * The transport energy cutoffs set by EMFCUT (or by DEFAULTS) are * applied as such to decay betas and gammas, but are multiplied by a * factor 20 when applied to prompt particles. |
© FLUKA Team 2000–2024