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Octopus
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Octopus
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brief This module defines the class unit_t which is used by the unit_systems_oct_m module. More...
brief This module defines the class unit_t which is used by the unit_systems_oct_m module.
Atomic weights should be read in "atomic mass units" (u) (not to be confused with mass in "atomic units"), that is, it should be given the relative atomic weight). 1 u is roughly the mass of the proton, and exactly one twelfth of mass of the ^{12}C isotope. The relation of the atomic mass unit and the atomic unit of mass, au_[mass], is:
1 au_[mass] = 5.485799110e-4 u
The atomic unit of mass is the mass of the electron. Unfortunately, the code uses units of mass of (eV/A^2)(h/(2pieV))^2, which are related to atomic units through 1 cu_[mass] = 7.619963358 au_[mass] . So:
1 u = (1/5.485799110e-4) au_[mass] = (1/5.485799110e-4) * (1/7.619963358) cu_[mass] = 239.225360 cu_[mass].
Data Types | |
| interface | operator(*) |
| interface | operator(**) |
| interface | operator(/) |
| interface | sqrt |
| type | unit_t |
| interface | units_from_atomic |
| interface | units_to_atomic |
Functions/Subroutines | |
| real(real64) elemental pure function | dunits_to_atomic (this, val) |
| complex(real64) elemental pure function | zunits_to_atomic (this, val) |
| real(real64) elemental pure function | dunits_from_atomic (this, val) |
| complex(real64) elemental pure function | zunits_from_atomic (this, val) |
| character(len=20) pure function, public | units_abbrev (this) |
| type(unit_t) pure function | units_multiply (aa, bb) |
| type(unit_t) pure function | units_divide (aa, bb) |
| type(unit_t) pure function | units_pow (aa, nn) |
| type(unit_t) pure function | units_sqrt (aa) |
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| character(len=20) pure function, public unit_oct_m::units_abbrev | ( | type(unit_t), intent(in) | this | ) |
1.9.4