View source for Definitions, units and constants

== Definitions ==

*ZA defines the element and isotope as 1000 <math>\times</math> Z + A, where Z is the proton number and A is the mass number. For example, the ZA for U-235 is 92235.
*ZA.id defines nuclides in cross section data libraries. ZA identifies the nuclide and id is the library id (for example, 92235.09c).
*ZAI defines the element, isotope and isomeric state as 10000 <math>\times</math> Z + 10 <math>\times</math> A + I, where Z is the proton number, A is the mass number and I is the isomeric state. For example, the ZAI for U-235 is 922350 and the ZAI for Am-242m is 952421.

== Units ==

{|class="wikitable" style="text-align: left;"
! Quantity
! Unit
! Notes
|-
| Distance
| cm
| Apart from solid 2 (unstructured mesh) points file which are in m
|-
| Area
| cm<sup>2</sup>
|
|-
| Volume
| cm<sup>3</sup>
|
|-
| Time
| s
| depends on the case
|-
| Energy
| MeV
|
|-
| Microscopic cross section
| b
| barn = 10<sup>-24</sup> cm<sup>2</sup>
|-
| Macroscopic cross section
| 1/cm
|
|-
| Mass
| g
|
|-
| Mass density
| g/cm<sup>3</sup>
|
|-
| Atomic density
| 10<sup>24</sup>/cm<sup>3</sup>
| ( = b<sup>-1</sup>cm<sup>-1</sup>)
|-
| Power
| W
|
|-
| Power density
| kW/g
|
|-
| Temperature
| K
|
|-
| Particle flux
| 1/cm<sup>2</sup>s
|
|-
| Reaction rate
| 1/cm<sup>3</sup>s
| reaction rate density
|-
| Burnup
| MWd/kgU
| per total initial heavy metal
|-
| Burn time
|  days
|
|}

== Constants ==

{|class="wikitable" style="text-align: left;"
! Constant
! Value
! Units
! Notes
|-
| INFTY
| 10<sup>37</sup>
| N/A
| Used to denote infinity
|-
| ZERO
| 10<sup>-37</sup>
| N/A
| The smallest nonzero absolute value
|}

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[[Category:Output]]
[[Category:Theory]]