| Status: |
STD 2005/06/07 |
| Code: |
45 |
| Symbol: |
eV |
| EQ label: |
ENERGY |
| |
| Quantities associated with this Unit |
|---|
|
| Quantity: |
maximum beta particle energy
|
| Concept definition: |
The maximum energy [ISO 80000-5:2007, item 5-20.1] of the energy spectrum in a beta disintegration process. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-35.b] |
| Supplemental references: |
|
|
| Quantity: |
beta disintegration energy
|
| Concept definition: |
The sum of the maximum beta particle energy [ISO 80000-10:2009, item 10-35] and the recoil energy [ISO 80000-5:2007, item 5-20.1] of the atom produced in the reference frame in which the emitting nucleus is at rest before its disintegration. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-36.b] |
| Supplemental references: |
|
|
| Quantity: |
reaction energy
|
| Concept definition: |
In a nuclear reaction, the sum of the kinetic energies [ISO 80000-4:2006, item 4-27.3] and photon energies [ISO 80000-5:2007, item 5-20.1] of the reaction products minus the sum of the kinetic and photon energies of the reactants. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-38.b and 10-38.1] |
| Supplemental references: |
|
|
| Quantity: |
resonance energy
|
| Concept definition: |
Kinetic energy [ISO 80000-4:2006, item 4-27.3] of an incident particle, in the reference frame of the target, corresponding to a resonance in a nuclear reaction. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-38.b and item 10-38.2] |
| Supplemental references: |
|
|
| Quantity: |
average energy loss per elementary charge produced
|
| Concept definition: |
Ek/Ni,where Ek is the initial kinetic energy [ISO 80000-4:2006, item 4-27.3] of an ionizing charged particle and Ni is the total ionization [ISO 80000-10:2009, item 10-61] produced by that particle. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-62.b] |
| Supplemental references: |
|
|
| Quantity: |
work function
|
| Concept definition: |
The energy [ISO 80000-4:2006, item 4.27.4] difference between an electron at rest at infinity and an electron at a certain energy level [ISO 80000-12:2009, item 12-25.1]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-12:2009, item 12-25.b and item 12-25.2] |
| Supplemental references: |
|
|
| Quantity: |
electron affinity
|
| Concept definition: |
The energy [ISO 80000-4:2006, item 4.27.4] difference between an electron at rest at infinity and an electron at the lowest level of the conduction band in an insulator or semiconductor. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-12:2009, item 12-26.b] |
| Supplemental references: |
|
|
| Quantity: |
Fermi energy
|
| Concept definition: |
In a metal, the highest occupied energy level [ISO 80000-12:2009, item 12-25.1] at zero thermodynamic temperature [ISO 80000-5:2007, item 5-1]. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-12:2009, item 12-28.b and item 12-28.1] |
| Supplemental references: |
|
|
| Quantity: |
exchange integral
|
| Concept definition: |
The constituent of the interaction energy [ISO 80000-4:2006, item 4-27.4] between the spins of adjacent electrons in matter arising from the overlap of electron state functions. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-12:2009, item 12-35.b] |
| Supplemental references: |
|
|
| Quantity: |
alpha disintegration energy
|
| Concept definition: |
The sum of the kinetic energy [ISO 80000-3:2006, item 4-27.3] of the α particle produced in the disintegration process and the recoil energy [ISO 80000-5:2007, item 5-20.1] of the product atom in the reference frame in which the emitting nucleus is at rest before its disintegration. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-34.b] |
| Supplemental references: |
|
|
| Quantity: |
energy
|
| Concept definition: |
The kinetic energy acquired by an electron in passing through a potential difference of 1 volt in a vacuum. Its value is experimentally determined as 1,602 176 487 40 x 10-19 J (approximately). |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-10:2009, item 10-28.b (Conversion factors and remarks)] |
| Supplemental references: |
[ISO 80000-1:2009, Table 6, "energy"] |
|
| Quantity: |
gap energy
|
| Concept definition: |
The difference in energy [ISO 80000-4:2006, item 4.27.4] between the lowest level of conduction band and the highest level of valence band. |
| |
| Reference type: |
PR |
| Reference: |
[ISO 80000-12:2009, item 12-28.b and item 12-28.2] |
| Supplemental references: |
|
|
