Determination of QCD condensates from low-energy hadronic data

1991 ◽  
Vol 44 (5) ◽  
pp. 1569-1577 ◽  
Author(s):  
I. Caprini
Keyword(s):  
Low Energy ◽  
Hadronic Data

Determination of denudation rates by the measurement of meteoric 10Be in Guadiana river sediment samples (Spain) by low-energy AMS

2018 ◽  
Vol 189 ◽  
pp. 227-235 ◽  
Author(s):  
S. Padilla ◽  
J.M. López-Gutiérrez ◽  
D.M.R. Sampath ◽  
T. Boski ◽  
J.M. Nieto ◽  
...  
Keyword(s):  
River Sediment ◽  
Low Energy ◽  
Sediment Samples ◽  
Denudation Rates

scholarly journals Determination of low energy (>160 keV) X-ray spectra and verification of transport calculations through silicon

1997 ◽  
Vol 44 (6) ◽  
pp. 2065-2070 ◽  
Author(s):  
J.R. Turinetti ◽  
K.L. Critchfield ◽  
J.R. Chavez ◽  
W.T. Kemp ◽  
R.D. Bellem ◽  
...  
Keyword(s):  
Low Energy ◽  
X Ray

Bi-Crystal Compensation Method for the Over-Response of Solid-State Dosimetry

2014 ◽  
Vol 605 ◽  
pp. 540-543 ◽  
Author(s):  
Ruo Xi Wang ◽  
Patrick Pittet ◽  
Julien Ribouton ◽  
Guo Neng Lu ◽  
Jean Marc Galvan ◽  
...  
Keyword(s):  
Solid State ◽  
Measured Data ◽  
Compensation Method ◽  
Low Energy ◽  
Field Size ◽  
Reference Curve ◽  
Pencil Beam ◽  
Dose Ratio ◽  
Highly Sensitive

Solid-state dosimetry employs highly sensitive semiconductors such as Gallium Nitride (GaN) and Silicon (Si), but they have a common drawback of over response compared to tissues for low-energy scattered photons, which induces inacceptable errors for radiotherapy application. To tackle this issue, we propose a compensation method consisting in using two different materials of dosimetric interest with different atomic numbers. Their responses are denoted as SC1 and SC2. The response ratio SC1/water as a function of the ratio SC1/SC2 exhibits a monotonic curve that can serve as reference to compensate the over-response of SC1. To validate this method, we have studied the dosimetric response of GaN (0.1 mm3) and Si crystals (2.5 mm3) by simulations, using a validated model based on the general cavity theory in a homogeneous water phantom. The dosimetric response of GaN and Si calculated using the model has errors within 2.5% compared to measured data. The local fluence spectra have been obtained by convolution of pencil beam kernel built by Monte Carlo simulations for different clinical irradiation conditions with field size (from 5×5 cm2up to 20×20 cm2) at depth in the phantom (from 2 cm to 25 cm). The obtained results confirm a monotone relationship between GaN/water dose ratio and GaN/Si dose ratio. The reference curve is independent of irradiation conditions (field size, dosimeter position...), and allows determination of compensation value by identification.

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