Photon energy distribution of some typical diagnostic x-ray beams

1977 ◽  
Vol 4 (3) ◽  
pp. 187-197 ◽  
Author(s):  
Thomas R. Fewell ◽  
Ralph E. Shuping
Keyword(s):  
Energy Distribution ◽  
Photon Energy ◽  
X Ray ◽  
Photon Energy Distribution

Two-photon energy distribution from the decay of the 21S0state in He-like uranium

2013 ◽  
Vol 87 (6) ◽  
Author(s):  
D. Banaś ◽  
A. Gumberidze ◽  
S. Trotsenko ◽  
A. V. Volotka ◽  
A. Surzhykov ◽  
...  
Keyword(s):  
Energy Distribution ◽  
Photon Energy ◽  
Two Photon ◽  
Photon Energy Distribution

Photon-energy distribution of hot-carrier photoemission from LOCOS and trench-isolated MOSFETs

1994 ◽  
Vol 37 (7) ◽  
pp. 1421-1428 ◽  
Author(s):  
Takashi Ohzone ◽  
Hideyuki Iwata ◽  
Yukiharu Uraoka ◽  
Shinji Odanaka
Keyword(s):  
Energy Distribution ◽  
Photon Energy ◽  
Hot Carrier ◽  
Photon Energy Distribution

scholarly journals Nonparametric inference of photon energy distribution from indirect measurement

Bernoulli ◽  
2007 ◽  
Vol 13 (2) ◽  
pp. 365-388 ◽  
Author(s):  
E. Moulines ◽  
F. Roueff ◽  
A. Souloumiac ◽  
T. Trigano
Keyword(s):  
Energy Distribution ◽  
Photon Energy ◽  
Indirect Measurement ◽  
Nonparametric Inference ◽  
Photon Energy Distribution

scholarly journals b→s+γ: A QCD-CONSISTENT ANALYSIS OF THE PHOTON ENERGY DISTRIBUTION

1996 ◽  
Vol 11 (03) ◽  
pp. 571-611 ◽  
Author(s):  
R. DAVID DIKEMAN ◽  
M. SHIFMAN ◽  
N.G. URALTSEV
Keyword(s):  
Experimental Data ◽  
Distribution Function ◽  
Energy Distribution ◽  
Photon Energy ◽  
Experimental Uncertainty ◽  
Gluon Emission ◽  
Hard Gluon ◽  
Photon Energy Distribution ◽  
Theoretical Side ◽  
The Way

The photon energy distribution in the inclusive b→s+γ transitions is a combination of two components: the first component, soft physics, is determined by the so-called primordial distribution function, while the second component, perturbative physics, is governed by hard gluon emission. A simple ansatz is suggested for the primordial distribution function which obeys the QCD constraints known so far. We then discuss in detail how hard gluon emission affects the energy distribution. An extension of the Sudakov approximation is worked out incorporating the Brodsky-Lepage-Mackenzie prescription and its generalizations. We explicitly calculate the marriage of nonperturbative and perturbative effects in the way required by OPE, introducing separation scale µ. A few parameters, such as mb and [Formula: see text] affect the shape of the distribution and, thus, can be determined by matching to the experimental data. The data, still scarce, while not giving precise values for these parameters, yield consistency with theory: the current values of the above parameters lie within experimental uncertainty. On the theoretical side we outline a method allowing one to go beyond the practical version of OPE.

Soft X-ray photon energy calibration using multilayer mirror

2020 ◽  
Author(s):  
Kiranjot ◽  
Mangalika Sinha ◽  
R. K. Gupta ◽  
P. K. Yadav ◽  
Mohammed H. Modi
Keyword(s):  
Photon Energy ◽  
Energy Calibration ◽  
X Ray ◽  
Multilayer Mirror

scholarly journals Monte Carlo Modeling and Design of Photon Energy Attenuation Layers for >10× Quantum Yield Enhancement in Si-Based Hard X-ray Detectors

Instruments ◽  
2021 ◽  
Vol 5 (2) ◽  
pp. 17
Author(s):  
Eldred Lee ◽  
Kaitlin M. Anagnost ◽  
Zhehui Wang ◽  
Michael R. James ◽  
Eric R. Fossum ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Quantum Yield ◽  
Photon Energy ◽  
High Efficiency ◽  
High Energy ◽  
Yield Enhancement ◽  
X Ray ◽  
Simulation Results ◽  
Conversion Efficiencies

High-energy (>20 keV) X-ray photon detection at high quantum yield, high spatial resolution, and short response time has long been an important area of study in physics. Scintillation is a prevalent method but limited in various ways. Directly detecting high-energy X-ray photons has been a challenge to this day, mainly due to low photon-to-photoelectron conversion efficiencies. Commercially available state-of-the-art Si direct detection products such as the Si charge-coupled device (CCD) are inefficient for >10 keV photons. Here, we present Monte Carlo simulation results and analyses to introduce a highly effective yet simple high-energy X-ray detection concept with significantly enhanced photon-to-electron conversion efficiencies composed of two layers: a top high-Z photon energy attenuation layer (PAL) and a bottom Si detector. We use the principle of photon energy down conversion, where high-energy X-ray photon energies are attenuated down to ≤10 keV via inelastic scattering suitable for efficient photoelectric absorption by Si. Our Monte Carlo simulation results demonstrate that a 10–30× increase in quantum yield can be achieved using PbTe PAL on Si, potentially advancing high-resolution, high-efficiency X-ray detection using PAL-enhanced Si CMOS image sensors.

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