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`IEEE 100 : the authoritative dictionary of IEEE standards terms.~7th ed.
`p. cm.
`_
`ISBN 0-7381-2601—2 (paper ack : alk. paper)
`1. Electric engineering—Dictionaries. 2. Electronics——Dictiona1ies. 3. Computer
`engineering—Dictionaries. 4. Electric engineering—Acronyms. 5. Electronics—4Acronyms.
`6. Computer engineering—~Acronym .
`.
`
`TK9 .128 2000
`
`621.3’03—d021
`
`'
`
`00—050601
`
`

`

`
`
`ionic-heated-cathode
`
`589
`
`ionospheric mode of propagation
`
`
`mplantation (A) (germanium gamma-ray detectors)
`; to studies and/or effects that ()6
`amed-particle detectors) A process in which a beam of
`(T&D/PE) 539‘1‘G
`ing organisms.
`
`ions incident upon a solid results in the irnbedding
`lCtiOI‘lS described in 3.9.1.10f IEE
`
`that searching for shell fimCtion
`
`'hergetic ions incident upon a solid results in the implan—
`)pfessed. See also: execute.
`
`on of those ions into the material.
`(C/PA) 9945.2-
`(NPS) 325-1996, 300-1988
`portion of an Integral Process [h
`
`mplanted contact A detector contact consisting of a junc-
`(C/SE) 1074.1.
`to.
`Produced by the process of ion implantation. See also:
`
`' used to distinguish one directory
`‘
`(NPS) 325-1996, 300-1988r
`outstanding operations.
`.
`_
`
`on (1) (A) A breakdown that occurs in parts of a di-
`1993w, 1224.2-1993w, 1327.2-19
`
`ctt‘iC when the electric stress in those parts exceeds a crit-
`13262-1
`’ Value without initiating a complete breakdown of the in—
`
`) The specific element identifier-
`am system. Note: Ionization can occur both on intemal
`
`(SCC32) 1455
`)onder.
`d'extemal parts of a device. It is a source of radio noise
`lephone switching systems) Am,
`
`ducan damage insulation. (B) The process by which an atom
`:asured-time direct distance dialin
`‘ olecule receives enough energy (by collision with elec-
`
`(COM) 3127]
`:tory number.
`fig, hotons, etc.) to split it into one or more free electrons
`
`nput or output or both.
`,mpositive ion. Ionization is a special case of charging.
`
`(C) [20]
`'
`_
`(PE/IA/I‘&D/PL/APP) [8], [79], 539—1990
`s.
`(SUB/PE) C37.
`_
`
`(A) (outdoor apparatus bushings) The formation of lim—
`
`‘ontroller; integrated optical circui
`d avalanches of electrons developed in insulation due to an
`
`output channel.
`”chic field. (B) (outdoor apparatus bushings) Ionization
`
`"
`.is the result of capacitive discharges in an insulating
`utput circuit.
`
`edium due to electron avalanches under the influence of an
`it-output controller.
`
`genie field. Note: The occurrence of such currents may
`harged atom or radical.
`.
`(IA)
`
`" e radio noise and/or damage to insulation.
`molecule, molecular cluster, or
`I
`.
`(PE/TR) 21-1976
`
`f one or more electrons has ac
`
`na measurement) .Any process by which neutral
`)te: The inclusion of aerosolsi(p
`
`cules or atoms dissociate to form positively and nega-
`
`yCharged particles.
`(MAG/ET) 436—19775
`tall ion” and “charged aerosol’
`ionyicurrent The electric current resulting from the
`(T&D/PE) 539—1990, 122
`ement of electric charges in an ionized medium, under
`
`a Luence of an applied electric field.
`.tration corrected for the devi
`‘
`
`_
`‘
`.
`(SPD/PE) C62.11—1999
`ions. Note: The activity of a sin
`:ver, be measured thennodyn
`extinction voltage (cable) (corona level) The min-
`
`value of falling root-mean—square voltage that sustains
`(EEC/PE
`
`' discharge within the vacuous or gas-filled spaces in
`
`1; construction or insulation.
`03E) [4]
`1 positive or negative charge of
`
`n factor (power distribution, underground cables)
`le of the electron charge.
`.
`
`lectric) The difference between percent power factors at
`
`(T&D/PE) 53
`ecified values of electric stress. The lower of the two
`
`:torage tubes) Dynamic decay
`5 is usually so selected that the effect of the ionization
`
`orage surface. See also: charge
`wet factor at this stress is negligible.
`(PE) [4]
`
`(ED) ' 158
`
`n- uge tube An electron tube designed for the meas—
`:ies of ion) The concentration ‘
`
`ntof‘low gas pressure and utilizing the relationship
`ons, or of moles or equivalent
`,
`5 pressure and ionization current.
`(ED) [45]
`nit volume of an electrolyte. -
`’-
`measurement The measurement of the electric cur-
`
`(EEC/PE
`ting from the movement of electric charges in an
`
`medium under the influence of the prescribed electric
`1‘
`(PEfI'R) 21-1976
`
`or corona detector See: discharge detector.
`
`or corona inception voltage See: discharge incep—
`ag ,,
`
`’01' corona probe See: discharge probe.
`smoke detector (fire protection devices) A device
`
`as a small amount of radioactive material which ion—
`
`‘air in the sensing chamber, thus rendering it conduc~
`
`
`
`
`
`ation area, they decrease the conductance of the air
`ble method; gr
`hing themselves to the ions,‘causing a reduction in
`
`technique.
`(StleO) :3
`11155 When the conductance is less than the predeter-
`
`a: to an electron gun but in.
`61, the detector circuit responds.
`(NFPA) [16]
`
`ions. Example: proton g
`line‘fgas tube) The time interval between the ini-
`
`(E _,
`f Conditions for and the establishment of conduction
`
`
`onic bombardment of the 6H“
`Curves relating such factors as condensed—mercury
`(ED) 161-19
`
`e ,anode andgrid currents, anode and grid volt-
`lube An electron tube cont
`
`Iegulation of the grid current.
`(ED) 161-1971w
`(ED) ”1
`
`ionization vacuum gauge A vacuum gauge that depends for its
`operation on the current of positive ions produced in the gas
`by electrons that are accelerated between a hot cathode and
`another electrode in'the evacuated space. Note: It is ordinarily
`used to cover a pressure range of 10"4 to 10‘10 conventional
`millimeters of mercury. See also: instrument.
`(EEC/PE) [119]
`ionization voltage A high—frequency voltage appearing at the
`terminals of an arrester, generated by all sources, but partic-
`ularly by ionization current within the arrester, when a power-
`frequency voltage is applied across the terminals.
`(SPD/PE) C62.11-1999
`ionizing event (gas-filled radiation counter tube) Any inter—
`action by Which one or more ions are produced.
`(ED) 161—1971w
`ionizing radiation (1) (A) (air) Particles or photons of sufficient
`energy to produce ionization in their passage through air.
`(B) (air) Particles that are capable of nuclear interactions with
`the release of sufficient energy to produce ionization in air.
`(NPS) 175-1960
`(2) Particles or photons of sufficient energy to produce ion-
`ization in interactions with matter.
`(NI/NPS) 309—1999
`ion migration A movement of ions in an electrolyte as a result
`of the application of an electric potential. See also: ion.
`(EEC/PE) [119]
`ion mobility (1) The theoretical drift speed of a single, isolated
`ion in a liquid or gas, per unit electric field strength. The
`preferred unit is nil/Vs; another commonly used unit is cmz/
`Vs. Ion mobility depends on the ionic species. In air, several
`ionic species can exist simultaneously.
`
`(T&D/PE) 539-1990
`(2) The drift speed of an ion in a liquid or gas per unit electric-
`field strength. The preferred unit is nil/Vs; another commonly
`used unit is crnZ/Vs.
`(T&D/PE)' 1227—1990r
`ionogram A record showing the group path delay of ionospheric
`echoes as a function of frequency.
`(AP/PROP) 211-1997
`ionosonde A swept—frequency or stepped frequency instrument
`that transmits radio waves vertically or obliquely to the ion-
`osphere and uses the echoes to form an ionogram.
`(AP/PROP) 211-1997
`ionosphere (1) (data transmission) That part of the earth’s
`outer atmosphere where ions and free electrons are normally
`present in quantities sufficient to affect propagation of radio
`waves.
`(PE) 599—1985w
`(2) That part of a planetary atmosphere where ions and free
`electrons are present in quantities sufficient to affect the prop—
`agation of radio waves.
`(AP/PROP) 211-1997
`ionosphere disturbance A variation in the state of ionization
`of the ionosphere beyond the normally observed random day-
`to-day variation from average values for the location, date,
`and time of day under consideration. Note: Since it is difficult
`to draw the line between normal and abnormal viations, this
`definition must be understood in a qualitative sense. See also:
`radiation.
`(EEC/PE) [119]
`ionosphere-height error (electronic navigation) The system-
`atic component of the total ionospheric error due to the dif-
`ference in geometrical configuration between ground paths
`and ionospheric paths. See also: navigation.
`(ABS/RS) 686-1982s, [42]
`ionospheric error (electronic navigation) The total systematic
`and random error resulting from the reception of the navi-
`gational signal via ionospheric reflections: this error may be
`due to variations in transmission paths, nonuniform height of
`the ionosphere, and nonuniform propagation within the ion—
`osphere. See also: navigation.
`(ABS/RS) 686-19825, [42]
`ionospheric absorption The loss of energy from an electro—
`magnetic Wave caused by collisions, primarily between elec-
`trons and neutral species and ions in the ionosphere.
`(AP/PROP) 211—1997
`ionospheric mode of propagation Representation of a trans-
`mission path by the number of hops between the end points
`of the path, the ionospheric layers producing the ionospheric
`
`