DCYTIMES

Summary

defines decay times for radioactive product scoring ​​​ ​

See also DCYSCORE, IRRPROFIle, RADDECAY, RESNUCLEi

Option DCYTIMES defines the times​ with respect to the end of the irradiation at which selected quantities (e.g. residual dose ​) are scored.

WHAT(1) :

cooling time​ (in s) after the irradiation​ end, to be associated to a scoring detector (see Note 1 below)

>=< 0.0: a new decay time is added with delayWHAT(1)

Default

: 0.0

WHAT(2) :

the same as WHAT(1) (one more cooling time)

WHAT(3) :

the same as WHAT(1) (one more cooling time)

WHAT(4) :

the same as WHAT(1) (one more cooling time)

WHAT(5) :

the same as WHAT(1) (one more cooling time)

WHAT(6) :

the same as WHAT(1) (one more cooling time)

SDUM

: not used

Default

(option DCYTIMES not requested): no decay times are defined

Notes

  1. Each cooling time is assigned an index, following the order in which it has been input. This index can be used in option DCYSCORE​ to assign that particular cooling time to one or more scoring detectors.​

  2. Multiple cards can be given, up to the maximum number of scoring times allowed MXTRDC (MXTRDC = 1500 as of version 2011.2c.5).

  3. All decay times are counted from the end of the last irradiation period defined using the IRRPROFIle ​ command. A null decay time corresponds to the end of irradiation. A negative decay time indicates a time during the irradiation.

  4. If a time is indicated more than once, only the first occurrence will be considered and the repetitions will be ignored.

Example 1:

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
DCYTIMES         0.0       10.       30.     3600.    43200.    86400.
* Six different times for scoring have been defined, each with an index
* corresponding to its input order:
* scoring time #1 is 0s, i.e. the end of the irradiation EoI
* scoring time #2 is 10s after EoI
* scoring time #3 is 30s after EoI
* scoring time #4 is 3600s (1 hour) after EoI
* scoring time #5 is 43200s (12 hours) after EoI
* scoring time #6 is 86400s (24 hours) after EoI

Example 2:

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
DCYTIMES     -86400.    -3600.       0.0     3600.    43200.    86400.
* Six different times for scoring have been defined, each with an index
* corresponding to its input order:
* scoring time #1 is -86400s (24 hours) before EoI
* scoring time #2 is -3600s, (1 hour) before EoI
* scoring time #3 is 0s, i.e. at EoI
* scoring time #4 is 3600s (1 hour) after EoI
* scoring time #5 is 43200s (12 hours) after EoI
* scoring time #6 is 86400s (24 hours) after EoI

Example 3:

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
DCYTIMES         10.       30.     3600.    43200.    86400.
* Five different times for scoring have been defined. WHAT(5) hasn't been
* provided and the default 0.0 is taken. Therefore six scoring times are
* available:
* scoring time #1 is 10s after EoI
* scoring time #2 is 30s after EoI
* scoring time #3 is 3600s (1 hour) after EoI
* scoring time #4 is 43200s (12 hours) after EoI
* scoring time #5 is 86400s (24 hours) after EoI
* scoring time #6 is 0s, i.e. at EoI

Example 4:

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
DCYTIMES         10.       10.     3600.     3600.
* Four different times for scoring have been defined. WHAT(5) and WHAT(6)
* haven't been provided and the default 0.0 is taken. The duplicated times are
* ignored. Therefore three scoring times are available:
* scoring time #1 is 10s
* scoring time #2 is 3600s, i.e. 1 hour
* scoring time #3 is 0s, i.e. the end of the irradiation

Example 5:

*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
DCYTIMES         10.
DCYTIMES         10.
DCYTIMES         30.
DCYTIMES         30.
DCYTIMES       3600.
DCYTIMES       3600.
DCYTIMES      86400.
DCYTIMES      86400.
* Eight different cards with one time each have been used. The default 0.0 is
* taken for all the WHATs that haven't been provided. The duplicated times are
* ignored. Therefore five scoring times are available:
* scoring time #1 is 10s after EoI
* scoring time #2 is 0s, i.e. at EoI
* scoring time #3 is 30s after EoI
* scoring time #4 is 3600s (1 hour) after EoI
* scoring time #5 is 86400s (24 hours) after EoI