Structure on the High‐Energy Side of the KL23M Auger Peak from Solid Aluminum: Internal Photoemission

1972 ◽  
Vol 20 (9) ◽  
pp. 335-337 ◽  
Author(s):  
C. J. Powell
Keyword(s):  
High Energy ◽  
Solid Aluminum ◽  
Auger Peak ◽  
Internal Photoemission ◽  
High Energy Side ◽  
Energy Side

scholarly journals Luminescence in KI:Tl

1961 ◽  
Vol 14 (3) ◽  
pp. 368 ◽  
Author(s):  
JE Alderson ◽  
SE Williams
Keyword(s):  
Single Crystals ◽  
High Energy ◽  
Activator Concentration ◽  
Host Crystal ◽  
Absorption Bands ◽  
High Energy Side ◽  
Luminescence Efficiency ◽  
Vacuum Monochromator ◽  
Impurity Centre ◽  
Energy Side

Freshly cleaved single crystals of KI:TI containing various concentrations of Tl have been irradiated in a vacuum monochromator in the 2800-1100 A region at temper. atures between -140 and 45 �0. The relative luminescence efficiencies in the Tl absorption bands and the host crystal fundamental absorption show that energy is transferred from host crystal to impurity centre to produce luminescence at room temperatures. To the high energy side of a threshold, which appears to depend on activator concentration, the luminescence efficiency is superlinear above about 15 �0 for KI:Tl (0�0005%).

scholarly journals Origin of the satellite observed on the high energy side of Lγ2,3diagram lines

2014 ◽  
Vol 534 ◽  
pp. 012018
Author(s):  
Rajeev Trivedi ◽  
Uma Shrivastava ◽  
B D Shrivastava
Keyword(s):  
High Energy ◽  
High Energy Side ◽  
Energy Side

Effect of alkylation of ammonia on the optical band shape of solvated electrons

1982 ◽  
Vol 60 (14) ◽  
pp. 1809-1814 ◽  
Author(s):  
Fang-Yuan Jou ◽  
Gordon R. Freeman
Keyword(s):  
Optical Absorption ◽  
Temperature Coefficient ◽  
High Energy ◽  
Correlation Factor ◽  
Theoretical Treatment ◽  
Band Shape ◽  
Optical Absorption Band ◽  
High Energy Side ◽  
Half Height ◽  
Energy Side

At 200 K the width at half height, W1/2, of the e−solv optical absorption band in n-propyl amine is 2.1-fold greater than that in ammonia. Three quarters of the broadening occurs on the high energy side of the band. The energy Er at half height on the low energy side of the band is nearly the same in the amine as in ammonia, while Eb, the energy at half height on the high energy side, is 42% greater in the amine. The temperature coefficient dEAmax/dT is 1.8-fold greater in the amine than in ammonia. The larger width is consistent with there being a less uniform distribution of localization sites in the system, and the larger temperature coefficient implies that the sites are more easily disturbed by thermal agitation. A quantum statistical mechanical model, such as the one begun by Simons, is needed to extend the theoretical treatment of e−solv spectra. The correlation between optical absorption energies of e−solv and the structure of the solvent, as partially reflected in the Kirkwood correlation factor, is re-emphasized.

scholarly journals Erratum: High-energy side-peak emission of exciton-polariton condensates in high density regime

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Tomoyuki Horikiri ◽  
Makoto Yamaguchi ◽  
Kenji Kamide ◽  
Yasuhiro Matsuo ◽  
Tim Byrnes ◽  
...  
Keyword(s):  
High Energy ◽  
High Density ◽  
Side Peak ◽  
High Energy Side ◽  
Peak Emission ◽  
Density Regime ◽  
Energy Side

scholarly journals High Energy Side and Rear American Football Head Impacts Cause Obvious Performance Decrement on Video

2020 ◽  
Vol 48 (11) ◽  
pp. 2667-2677
Author(s):  
Adam J. Bartsch ◽  
Daniel Hedin ◽  
Jay Alberts ◽  
Edward C. Benzel ◽  
Jason Cruickshank ◽  
...  
Keyword(s):  
High Energy ◽  
American Football ◽  
Performance Decrement ◽  
Head Impacts ◽  
High Energy Side ◽  
Energy Side

Emission Characteristics of GaN-Based EL Device with AC Operation

2000 ◽  
Vol 639 ◽  
Author(s):  
Tohru Honda ◽  
Hideo Kawanishi
Keyword(s):  
Room Temperature ◽  
High Energy ◽  
Emission Characteristics ◽  
Emission Layer ◽  
High Energy Side ◽  
Operation Frequency ◽  
Energy Side

ABSTRACTGaN-based electroluminescence devices (ELDs) were fabricated using a GaN powder as an emission layer. The electroluminescence spectra of the GaN ELDs under AC operation were observed at room temperature. The emission characteristics of GaN-based ELDs were studied to compare the EL spectra and the cathodoluminescence (CL) spectra. It was clarified that the EL spectra were similar to the CL spectra of a GaN emission layer. The emission peaks in the EL spectra were shifted toward the high-energy side with increasing operation frequency.

Electroreflectance Spectra of InGaN/AlGaN/GaN p-n-Heterostructures

2006 ◽  
Vol 955 ◽  
Author(s):  
Alexander E. Yunovich ◽  
Lev Avakyants ◽  
Mansur Badgutdinov ◽  
Pavel Bokov ◽  
Anatoly Chervyakov ◽  
...  
Keyword(s):  
Spectral Line ◽  
Quantum Wells ◽  
Flip Chip ◽  
Refraction Index ◽  
High Energy ◽  
Multiple Quantum Wells ◽  
Multiple Quantum ◽  
High Energy Side ◽  
Franz Keldysh Effect ◽  
Energy Side

ABSTRACTElectroreflectance (ER) spectra of InGaN/AlGaN/GaN p-n- heterostructures with multiple quantum wells (MQW) are studied. Structures with MQW InGaN/GaN were grown for blue LEDs by MOCVD technology and “flip-chip” mounted. The ER spectral maxima correspond to the high energy side of electroluminescence spectral line. The ER spectra caused by Franz-Keldysh effect are approximated by Aspnes theory. The ER spectra in a range 400 ÷ 800 nm have interference bands caused by the change of refraction index in the structure.

X-Ray LIII Absorption Edges of Bismuth Halides

1978 ◽  
Vol 33 (8) ◽  
pp. 946-950
Author(s):  
P. R . Sarode
Keyword(s):  
Absorption Edge ◽  
High Energy ◽  
Pure Metal ◽  
Partial Charge ◽  
X Ray ◽  
High Energy Side ◽  
Pure Bismuth ◽  
Energy Side ◽  
Absorption Edges

The position of the bismuth LIII absorption discontinuity has been studied in pure bismuth metal and in its halides, BiF3, BiCl3, BiBr3 and BiI3 using a focussing spectrograph of the transmission (Cauchois) type. In all these compounds the discontinuity is found to shift towards the high energy side with respect to that in the pure metal. The experimental material presented in this study convincingly shows that the position of the LIII absorption edge is determined by the partial charge of the absorbing atom and not by its valence.

scholarly journals Ultraviolet absorption cross sections of carbonyl sulfide isotopologues OC<sup>32</sup>S, OC<sup>33</sup>S, OC<sup>34</sup>S and O<sup>13</sup>CS: isotopic fractionation in photolysis and atmospheric implications

2011 ◽  
Vol 11 (19) ◽  
pp. 10293-10303 ◽  
Author(s):  
S. Hattori ◽  
S. O. Danielache ◽  
M. S. Johnson ◽  
J. A. Schmidt ◽  
H. G. Kjaergaard ◽  
...  
Keyword(s):  
Cross Sections ◽  
Carbonyl Sulfide ◽  
Isotopic Fractionation ◽  
High Energy ◽  
Ultraviolet Absorption ◽  
Absorption Cross ◽  
Rare Isotopes ◽  
Mass Dependent ◽  
Franck Condon ◽  
Energy Side

Abstract. We report measurements of the ultraviolet absorption cross sections of OC32S, OC33S, OC34S and O13CS from 195 to 260 nm. The OCS isotopologues were synthesized from isotopically-enriched elemental sulfur by reaction with carbon monoxide. The measured cross section of OC32S is consistent with literature spectra recorded using natural abundance samples. Relative to the spectrum of the most abundant isotopologue, substitution of heavier rare isotopes has two effects. First, as predicted by the reflection principle, the Gaussian-based absorption envelope becomes slightly narrower and blue-shifted. Second, as predicted by Franck-Condon considerations, the weak vibrational structure is red-shifted. Sulfur isotopic fractionation constants (33ε, 34ε) as a function of wavelength are not highly structured, and tend to be close to zero on average on the high energy side and negative on the low energy side. The integrated photolysis rate of each isotopologue at 20 km, the approximate altitude at which most OCS photolysis occurs, was calculated. Sulfur isotopic fractionation constants at 20 km altitude are (−3.7 ± 4.5)‰ and (1.1 ± 4.2)‰ for 33ε and 34ε, respectively, which is inconsistent with the previously estimated large fractionation of over 73‰ in 34ε. This demonstrates that OCS photolysis does not produce sulfur isotopic fractionation of more than ca. 5‰, suggesting OCS may indeed be a significant source of background stratospheric sulfate aerosols. Finally, the predicted isotopic fractionation constant for 33S excess (33E) in OCS photolysis is (−4.2 ± 6.6)‰, and thus photolysis of OCS is not expected to be the source of the non-mass-dependent signature observed in modern and Archaean samples.

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