scholarly journals NLO QED corrections to ISR in $e^+ e^-$ annihilation and the measurement of $\sigma(e^+ e^- \rightarrow{\mathrm{hadrons}})$ using tagged photons

2001 ◽  
Vol 22 (1) ◽  
pp. 81-88 ◽  
Author(s):  
G. Rodrigo ◽  
A. Gehrmann-De Ridder ◽  
M. Guilleaume ◽  
J.H. Kühn
Keyword(s):  
Tagged Photons ◽  
Sigma E

scholarly journals Deep inelastic scattering with tagged photons at HERA

1997 ◽  
Vol 76 (3) ◽  
pp. 487-497 ◽  
Author(s):  
D. Bardin ◽  
L. Kalinovskaya ◽  
T. Riemann
Keyword(s):  
Inelastic Scattering ◽  
Deep Inelastic Scattering ◽  
Tagged Photons

scholarly journals Test of Anderson-Stuart model in sodium silicate glasses and the general Arrhenian conductivity rule in wide composition range

Cerâmica ◽  
2006 ◽  
Vol 52 (321) ◽  
pp. 22-30 ◽  
Author(s):  
M. L. F. Nascimento ◽  
E. Nascimento ◽  
W. M. Pontuschka ◽  
M. Matsuoka ◽  
S. Watanabe
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Sodium Silicate ◽  
Composition Range ◽  
Absolute Temperature ◽  
Alkali Concentration ◽  
Relative Dielectric Permittivity ◽  
Silicate System ◽  
Wide Composition Range ◽  
Sigma E

We collected and analyzed literature data on ionic conductivity sigma and activation energy E A in the binary sodium silicate system in a wide composition range. The Anderson and Stuart model has been considered to describe the decreasing tendency of activation energy E A with alkali concentration in this system. In this analysis were considered experimental parameters, such as shear modulus G and relative dielectric permittivity epsilon. A general conductivity rule is found in 194 of 205 glasses, when one plots log sigma vs. E A/kB T, where kB is the Boltzmann constant and T is the absolute temperature. This fact means that the arrhenian relation has universal uniqueness of form sigma = sigma (E A,T) in wide Na2O composition range. The results also show that there is strong correlation by more than 19 orders of magnitude on conductivity with E A/kBT. An explanation for this behavior links ionic conductivity and microscopic structure. The problem of phase separation in this system is also considered.

scholarly journals CROSS SECTION ASYMMETRY OF THE 12C(γ,p0)11B AND 12C(γ,p1)11B REACTIONS AT PHOTON ENERGIES 40...55MeV

2019 ◽  
pp. 26-37
Author(s):  
D.D. Burdeinyi ◽  
J. Brudvik ◽  
V.B. Ganenko ◽  
K. Hansen ◽  
K. Fissum ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Energy Range ◽  
Cross Section ◽  
Relative Contribution ◽  
Linearly Polarized ◽  
The Asymmetry ◽  
The Cross ◽  
Tagged Photons

The asymmetry of the cross section of the 12C(γ,p0)11B and 12C(γ,p1)11B reactions has been measured in the energy range 40...55MeV using linearly polarized tagged photons of the MAX-lab facility. The asymmetry of the process 12C(⃗γ,p0)11B is Σ ≈ 0.85, that implies one-particle reaction mechanism. The asymmetry of the reaction 12C(⃗γ,p1)11B is smaller, Σ ≈ 0.6...0.7, that may be due to the stronger relative contribution of the 2h−1p mechanism to the dominant one-particle reaction mechanism.

scholarly journals Tagged photons :

1981 ◽  
Author(s):  
Leonard C Maximon ◽  
Arlette de Miniac ◽  
Thierry Aniel
Keyword(s):  
Tagged Photons

scholarly journals Diagnóstico e Proposta de diretrizes na aplicação do método DMAIC para melhoria das dimensões do Planejamento e Controle da Produção

2020 ◽  
Vol 21 (2) ◽  
Author(s):  
Fernanda Marques de Moura ◽  
Ana Lúcia Figueiredo Facin ◽  
Adriana Miralles Schleder
Keyword(s):  
Sigma E

Este trabalho teve como objetivo corroborar para a discussão sobre a utilização de ferramentas da Gestão da Qualidade na melhoria do Planejamento e Controle da Produção (PCP), visando alavancar as diferentes dimensões da competitividade. Buscou-se na literatura estudos que trabalharam com essa integração, focando na utilização de ferramentas associadas ao programa Seis Sigma e mais especificamente ao uso do DMAIC. Com as análises realizadas foi possível criar uma proposta com diretrizes para aplicação do método, com o intuito de mitigar os pontos fracos encontrados e suas possíveis consequências. Esta proposta foi separada em fases, onde em cada uma delas constam atividades sugeridas a serem realizadas, de forma cronológica. Foi possível concluir que há uma relação entre os temas citados e eficácia na utilização dos dois em conjunto. Porém, existe a necessidade de uma abordagem mais profunda a respeito dos possíveis benefícios desta integração.

Experimental study of the adaptive gain feature for improved position-sensitive ion spectroscopy with Timepix2

2022 ◽  
Vol 17 (01) ◽  
pp. C01025
Author(s):  
B. Bergmann ◽  
P. Smolyanskiy ◽  
P. Burian ◽  
S. Pospisil
Keyword(s):  
Energy Content ◽  
High Energy ◽  
Relative Energy ◽  
Ion Spectroscopy ◽  
Spatially Resolved ◽  
Deposited Energy ◽  
Novel Method ◽  
Thickness Variations ◽  
Sigma E ◽  
Better Than

Abstract In the present work, we study the Timepix2 pixels’ high energy response in the so-called adaptive gain mode. Therefore, Timepix2 with a 500 μm thick silicon sensor was irradiated with protons of energies in the range from 400 keV to 2 MeV and α-particles of 5.5 MeV from 241Am. A novel method was developed to determine the energy deposit in single pixels of particle imprints, which are spread out over a set of neighbor pixels (cluster). We show that each pixel is capable of measuring the deposited energy from 4 keV up to ∼3.2 MeV. Reconstructing the full energy content of the clusters, we found relative energy resolutions ( σ E ) better than 2.7% and better than 4% for proton and α-particle data, respectively. In a simple experiment with a 5.5 MeV α-particle source, we demonstrate that energy losses in thin (organic) specimen can be spatially resolved, mapping out sample thickness variations, with a resolution around 1–2 μm, across the sensor area. The inherent spatial resolution of the device was determined to be 350 nm in the best case.

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