| Description: The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure. |
| Namespace Id: pds | Steward: pds | Class Name: Units_of_Energy | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: None | Conceptual Domain: None |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | J | J is an abbreviation for joule, which is a unit of energy (in terms of SI base units, 1 joule = 1 kilogram meter squared per second squared = 1 kg m**2 / s**2). |
| | MeV | MeV is an abbreviation for megaelectronvolt, which is a unit of energy (1 MeV = 10**6 eV = one million electronvolts). |
| | eV | eV is an abbreviation for electronvolt, which is a unit of energy (1 eV = 1.602176634 times 10**{-19} J). |
| | keV | keV is an abbreviation for kiloelectronvolt, which is a unit of energy (1 keV = 10**3 eV = one thousand electronvolts). |