X-Ray-Induced Photoconductivity in Dielectric Materials

Lee, R. S.; Fulk, G. A.; Barlett, R. H.; Meeker, D.J.; Weingart, R.C.

doi:10.1109/tns.1975.4328037

Cited by 15 publications

(1 citation statement)

References 1 publication

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“…[1][2][3][4][5] In general, calculating the conductivity induced by intense irradiation is very complicated. Here, we derive a rather simple formula for calculating the minimum prompt conductivity of insulators induced by x rays (or electrons) at dose rates greater than about 1017 photons cm-3 s-l and at pulse times in the nanosecond to microsecond range; The whole argument is based on the simplicity of the physics of the problem in the first few nanoseconds or, sometimes, even the first few microseconds.…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity Induced in Insulators by Pulsed Radiation

Ahrenst

Wooten

1976

IEEE Trans. Nucl. Sci.

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The minimum prompt photoconductivity induced by pulses of x rays, gamma rays, and energetic electrons in various amorphous and disordered insulating organic and inorganic materials is predicted on the basis of data for the scattering of hot electrons in solids and the band gap for insulators. For total doses of 3 x 104 to 30 x 104 rad or greater, the minimum prompt photoconductivity is predicted to be linear with dose rate, r and is given by O(Q1cm1) = 5 x 1019 p0y/E2, where po is the density (g/cm3) and Eg is the optical band gap (eV). This formula agrees well with data for a variety of plastics, mica, and borosilicate glass under widely different irradiation conditions. The formula considerably underestimates absolute values of prompt conductivities observed for A1203, MgO, and certain plastics, because the model does not hold for ordered materials.

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Section: Introductionmentioning

confidence: 99%

Electrical Conductivity Induced in Insulators by Pulsed Radiation

Ahrenst

Wooten

1976

IEEE Trans. Nucl. Sci.

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Time‐resolved nanosecond radiation‐induced conductivity in polymers

et al. 1986

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Nanosecond time-resolved RIC in some 30 polymers excited by a 40 ns, 8 MeV electron pulse has been studied. Irradiation was carried out in vacuum a t room temperature. For some polymers comparative investigations in the microsecond time region are also reported. Data analysis is based on the concept of geminate electrons controlling pulsed conductivity. It is shown that the application of the dispersive transport formalism allows to gain valuable information concerning the initial effective mobility and the frequency factor directly from the experiment. Die zeitaufgeloste strahlungsinduzierte Leitfahigkeit yon Polymeren im Nanosekundenbereich Die strahlungsinduzierte Leitfahigkeit von mehr als 30 Polymeren nach Anregung durch einen Elektronenimpuls (40 ns, 8 MeV) wurde im Nanosekundenbereich untersucht. Die Bestrahlung erfolgte im Vakuum bei Zimmertemperatur. An einigen Polymeren wurden auch vergleichende Untersuchungen im Mikrosekundenbereich durchgefiihrt. Die Analyse der Meliwerte erfolgt auf Basis des Konzepts der durch die erzeugten Ladungstragerpaare kontrollierten Leitfahigkeit. Es wird gezeigt, daD unter Zugrundelegung des Modells eines dispersiven Ladungstransports wertvolle Informationen uber die effektive Anfangsbeweglichkeit und zum Frequenzfaktor unmittelbar aus dem Experiment erhalten werden konnen. HaHocercyxalcan paaua yuonno-wnynbcnan snel~mponposodnocmb nonmepos Coo61qam~cs pe3yJlbTaTbl EICCJIeAOBaHEIH HaHOCeKYHAHO& paAaaqEIOHHO-EIMIIynbCHO& 3JleKTpOIIpOBO,QHOCTM, B03-6yxqae~oZt B IIOnEIMepaX (HCCJIeAOBaHO donee 30) YCKOpeHHbIX 3JIeKTpOHOB (3HeprEIH 8 M3B). &Ill PRna IIOJIEIMepOB BbIIIOJIHeHM CpaBHEITenbHbIe IlCCneAOBaHaH M B MEKpOCeKyHAHO& o 6 n a c~a . A~a n n 3 AaHHblX IIPOBOAEITCH H a OCHOBe IIOHHTEIH 0 reMHHaJTbHO& 3JleKTpOnpOBOAHOCTEI. n O K a 3 a H 0 , YTO IIpkiMeHHe KOHqeII~EIH AkiCIIepCEIOHHOrO TpaHCIIOpTa II03BOJIHeT IIOJlyWlCb QeHHYH) EIH@OPMElqMH) DO HaqaJIbHO& IlOABEIH(HOCTI4 HOCliTeJre& 3apRAa II WlCTOTHOMY @aKTOpy IIPHMO 113 3KCIIePEIMeHTaJIbHbIX AaHHblX. KOPOTKEIMEI IfMIIynbCaMA (40 HC)

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Transfer Effects in ODMR Spectra of ZnSe:Mn)

Kluge¹,

Donecker²

1984

Phys. Stat. Sol. (a)

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Manganese and donor‐acceptor luminescence in ZnSe is investigated by optically detected magnetic resonance (Odmr). Resonances due to the Mn2+ ground state are observed not only in the 4T1 → 6A1 emission band of Mn2+ but in two donor‐acceptor recombination bands. Possible mechanisms for the transfer of the ground state resonance to the excited states are discussed. Cross relaxation is the most probable effect. Moreover, spin memory manifests itself in the influence of the excitation polarization on ODMR signals.

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X-Ray-Induced Photoconductivity in Dielectric Materials

Cited by 15 publications

References 1 publication

Electrical Conductivity Induced in Insulators by Pulsed Radiation

Electrical Conductivity Induced in Insulators by Pulsed Radiation

Time‐resolved nanosecond radiation‐induced conductivity in polymers

Transfer Effects in ODMR Spectra of ZnSe:Mn)

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