Appendix A
Nomenclature
A.1 Constants and Measurement Units
| A | ampere (unit of current) |
| AU | astronomical unit (Earth-to-Sun distance,  km) |
| C | coulomb |
| cm | centimeter |
| dB | decibel |
| deg | degree |
| e/cm2 | electrons per square centimeter |
| eV | electron volt |
| F | farad (measure of electrical capacitance) |
| ft | foot |
| GHz | gigahertz |
| h | hour |
| Hz | hertz, unit of frequency (1 cycle per second) |
| in. | inch |
| J | joule (unit of energy) |
| K | kelvin |
| kÅ | kiloangstrom |
| keV | kiloelectron volt (103 eV) |
| kg | kilogram |
| km | kilometer |
| kΩ | kilohm (103 Ω) |
| kV | kilovolt (103 V) |
| m | meter, mass, milli |
| M | mega, million |
| mA | milliampere (10−3 A) |
| MeV | million electron volts |
| mho | unit of electrical conductance, the reciprocal of resistance in Ω, also known as the siemens (S) |
| MHz | megahertz (frequency, 106 Hz) |
| mil | one-thousandth of an inch = 0.001in. = 0.0254 mm [Note Although the mil is not an SI unit of measure, it is a standard unit of measure (unconverted to SI units) often used in this discipline to describe material thickness]. |
| min | minute |
| mJ | millijoule (10−3 J) |
| mm | millimeter |
| mΩ | milliohm (10−3 Ω) |
| MΩ | megohm (106 Ω) |
| mV | millivolt |
| nA | nanoampere (10−9 A) |
| nC | nanocoulomb (10−9 C) |
| nF | nanofarad (10−9 F) |
| nm | nanometer (10−9 m) |
| ns | nanosecond (10−9 s) |
| nT | nanotesla (10−9 tesla), magnetic field unit |
| ohm (Ω) | unit of electrical resistance |
| pA | picoampere (10−12 A) |
| pF | picofarad (10−12 F) |
| q |
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