A practical model for calculation of the proton induced SEU cross section using experimental heavy ion SEU cross sections

2002 ◽  
Author(s):  
A. Akkerman ◽  
Y. Lifshitz ◽  
J. Levinson ◽  
M. Hass ◽  
D. Ilberg
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Heavy Ion ◽  
Practical Model

scholarly journals The geological framework for Hvideklint, south-east Denmark, using glaciodynamic sequence stratigraphy

2021 ◽  
Vol 47 ◽  
Author(s):  
Stig A. Schack Pedersen ◽  
Peter Gravesen
Keyword(s):  
Sea Level ◽  
Sequence Stratigraphy ◽  
Cross Section ◽  
Cross Sections ◽  
Drill Hole ◽  
Balanced Cross Section ◽  
Geological Cross Section ◽  
Thrust Sheets ◽  
Practical Model ◽  
Complex Architecture

Glaciodynamic sequence stratigraphy provides a practical model for grouping and classifying complex geological data to aid interpretation of past climatic and environmental development in Quaternary successions. The principles of glaciodynamic sequence stratigraphy are applied here to summarise the complex glacial geological framework of Hvideklint on the island of Møn, south-east Denmark. The framework of the superimposed deformed Hvideklint is presented in a reconstructed geological cross-section of Hvideklint. For the construction of the architecture of the glaciotectonic complex, the interpretation of structures below sea level was based on a detailed new survey of the cliff section combined with construction of successive approximation balanced cross-sections. The new description is supported by drill hole data from the Jupiter database. Where chalk is not glaciotectonically deformed, the constructed depth to the top-chalk-surface is generally located about 30 m below sea level. In Hvideklint, thrust sheets with chalk are exposed 20 m above sea level, and the balanced cross-section constructions indicate that the décollement surface for a Hvideklint glaciotectonic complex is located about 80 m below sea level. Between the décollement level and the top of the complex, two or more thrust-fault flat-levels and connecting ramps add to the complex architecture of Hvideklint.

The effects of nucleus form factors on the electromagnetically produced heavy lepton pairs

2016 ◽  
Vol 25 (02) ◽  
pp. 1650006 ◽  
Author(s):  
M. Y. Şengül
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Form Factors ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Lepton Pairs ◽  
Heavy Lepton ◽  
Ion Collisions ◽  
Realistic Form ◽  
The Cross

In this paper, the effects of different nucleus form factors to the cross-sections of electromagnetically produced heavy lepton pairs such as muons and tauons from the ultra-relativistic heavy ion collisions have been calculated. Nucleus form factors play important roles in the calculation of the cross-sections, because the Compton wavelengths of muon and tauon are comparable to the radius of the colliding ions. Some realistic form factors in these calculations have been used and compared the results among them. It has been shown that nucleus form factors reduce the cross-section calculations for muon and tauon pair production very strongly especially at RHIC energies.

HEAVY ION EXCITATION OF GIANT RESONANCES: A BRIDGE FROM THE ELASTIC SCATTERING TO THE INELASTIC DATA

1993 ◽  
Vol 08 (11) ◽  
pp. 997-1004
Author(s):  
A. N. F. ALEIXO ◽  
C. A. BERTULANI ◽  
M. S. HUSSEIN
Keyword(s):  
Elastic Scattering ◽  
Cross Section ◽  
Cross Sections ◽  
Giant Resonance ◽  
Heavy Ion ◽  
Elastic Cross Section ◽  
Giant Resonances ◽  
Intermediate Energies ◽  
Ion Collisions ◽  
Novel Method

We develop data-to-data relations involving the giant-resonance cross-sections and the elastic cross-section for heavy ion collisions at intermediate energies. The usefulness of this novel method is shown by applications to the 17 O + 208 Pb at E Lab = 84 MeV/nucleon.

scholarly journals Calculation of athermal recombination corrected dpa cross sections for proton, deuteron and heavy-ion irradiations using the PHITS code

2020 ◽  
Vol 239 ◽  
pp. 20011
Author(s):  
Yosuke Iwamoto ◽  
Shin-ichiro Meigo
Keyword(s):  
Energy Range ◽  
Cross Section ◽  
Cross Sections ◽  
Damage Model ◽  
Incident Beam ◽  
Heavy Ion ◽  
High Energy ◽  
Defect Production ◽  
Deuteron Irradiation ◽  
Aluminium Copper

To provide the athermal recombination corrected dpa (arc-dpa) cross sections for proton, deuteron and heavy ion irradiations in the energy range from 1 MeV/u to 3 GeV/u., the defect production efficiencies for aluminium, copper and tungsten were implemented in the radiation damage model in PHITS. In general, the dpa cross section is large with increasing the number of protons of incident particle. For high-energy (around 1 GeV/u) proton and deuteron irradiation, the dpa cross section is close to that under 12C irradiation due to secondaries produced by the nuclear reaction. The ratio of arc-dpa cross section to the conventional Norgett-Robinson-Torrens dpa (NRT-dpa) cross section is around 0.2 with incident energies over 100 MeV for proton and deuteron irradiations. For the case of 12C and 48Ca, this ratio is ranged from 0.3 to 0.4 for incident beam energies below 3 GeV/u.

scholarly journals A Study of the pB → Y K Reactions for Kaon Production in Heavy Ion Collisions

1997 ◽  
Vol 50 (1) ◽  
pp. 35 ◽  
Author(s):  
K. Tsushima ◽  
S. W. Huang ◽  
Amand Faessler
Keyword(s):  
Differential Cross Section ◽  
Cross Section ◽  
Cross Sections ◽  
Differential Cross ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Kaon Production ◽  
Resonance Model ◽  
Total Cross Sections ◽  
Ion Collisions

Parametrizations of total cross sections sucient for all channels of the πB → Y K reactions are completed using a resonance model. As well as discussing the πN → ΛK reactions, which were not presented in our previous publications, we present the differential cross section for πN → ΛK. This report also aims at presenting supplementary discussions to our previous work.

DYNAMICAL CHANGE OF SURFACE DIFFUSENESS OF ION–ION POTENTIAL AND ITS EFFECT ON FUSION CROSS-SECTION

2013 ◽  
Vol 22 (02) ◽  
pp. 1350010 ◽  
Author(s):  
M. ISMAIL ◽  
W. M. SEIF
Keyword(s):  
Simple Model ◽  
Cross Section ◽  
Cross Sections ◽  
Fusion Cross Section ◽  
Heavy Ion ◽  
Nuclear Potential ◽  
Physical Processes ◽  
Surface Diffuseness ◽  
Heavy Ion Fusion ◽  
Dynamical Change

We assume a simple model to describe the ion–ion potential with dynamical change in its surface diffuseness. In particular, this model is used to calculate the heavy-ion fusion cross-section using different values of the surface diffuseness. Both the static and dynamic nuclear Woods–Saxon potentials with diffuseness values ranging between 0.65 fm and 1.3 fm are used to reproduce the fusion cross-sections data of the 19 F +208 Pb and 16 O +154 Sm reactions. The results estimate that there are different physical processes which could contribute to the fusion cross-section with different weights at each energy value. Each of these processes has its own nuclear potential.

The NUMEN Technical Design Report

2021 ◽  
Author(s):  
Francesco Cappuzzello ◽  
Clementina Agodi ◽  
Luciano Calabretta ◽  
Daniela Calvo ◽  
Diana Carbone ◽  
...  
Keyword(s):  
Beta Decay ◽  
Cross Section ◽  
Cross Sections ◽  
Body Wave ◽  
Heavy Ion ◽  
Double Beta Decay ◽  
Formal Similarity ◽  
Basic Point ◽  
Double Charge Exchange ◽  
Double Charge

NUMEN proposes an innovative technique to access the nuclear matrix elements entering the expression of the lifetime of the double beta decay by cross-section measurements of heavy-ion induced Double Charge Exchange (DCE) reactions. Despite the fact that the two processes, namely neutrinoless double beta decay and DCE reactions, are triggered by the weak and strong interaction respectively, important analogies are suggested. The basic point is the coincidence of the initial and final state many-body wave functions in the two types of processes and the formal similarity of the transition operators. The main experimental tools for this project are the K800 Superconducting Cyclotron and MAGNEX spectrometer at the INFN-LNS laboratory. However, the tiny values of DCE cross-sections and the resolution requirements demand beam intensities much higher than those manageable with the present facility. The on-going upgrade of the INFN-LNS facilities promoted by the POTLNS * project in this perspective is intimately connected to the NUMEN project. This paper describes the solutions proposed as a result of the R&D activity performed during the recent years. The goal is to develop suitable technologies allowing for the measurements of DCE cross-section under extremely high beam intensities. * PIR01_00005 — potenziamento dell’infrastruttura di ricerca Laboratori Nazionali del Sud per la produzione di fasci di ioni ad alta intensitá.

Electron Irradiation Effects in Polyoxymethylene Crystals Grown Inside Trioxane Crystals

1971 ◽  
Vol 29 ◽  
pp. 78-79
Author(s):  
J. P. Colson ◽  
D. H. Reneker
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Detailed Examination ◽  
The Other ◽  
Electron Micrograph ◽  
Irradiation Effects ◽  
Threefold Axis ◽  
Typical Sample ◽  
Polymer Crystals ◽  
Chain Axis

Polyoxymethylene (POM) crystals grow inside trioxane crystals which have been irradiated and heated to a temperature slightly below their melting point. Figure 1 shows a low magnification electron micrograph of a group of such POM crystals. Detailed examination at higher magnification showed that three distinct types of POM crystals grew in a typical sample. The three types of POM crystals were distinguished by the direction that the polymer chain axis in each crystal made with respect to the threefold axis of the trioxane crystal. These polyoxymethylene crystals were described previously.At low magnifications the three types of polymer crystals appeared as slender rods. One type had a hexagonal cross section and the other two types had rectangular cross sections, that is, they were ribbonlike.

A quantitative approach to inner shell losses

1978 ◽  
Vol 36 (1) ◽  
pp. 526-527 ◽  
Author(s):  
R.D. Leapman ◽  
P. Rez ◽  
D.F. Mayers
Keyword(s):  
Energy Transfer ◽  
Cross Section ◽  
Cross Sections ◽  
Accurate Determination ◽  
Background Intensity ◽  
Core Excitation ◽  
Quantitative Basis ◽  
Cross Section Differential ◽  
Bound Electrons

Microanalysis by EELS has been developing rapidly and though the general form of the spectrum is now understood there is a need to put the technique on a more quantitative basis (1,2). Certain aspects important for microanalysis include: (i) accurate determination of the partial cross sections, σx(α,ΔE) for core excitation when scattering lies inside collection angle a and energy range ΔE above the edge, (ii) behavior of the background intensity due to excitation of less strongly bound electrons, necessary for extrapolation beneath the signal of interest, (iii) departures from the simple hydrogenic K-edge seen in L and M losses, effecting σx and complicating microanalysis. Such problems might be approached empirically but here we describe how computation can elucidate the spectrum shape.The inelastic cross section differential with respect to energy transfer E and momentum transfer q for electrons of energy E0 and velocity v can be written as

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