Zobrazeno 1 - 10
of 21
pro vyhledávání: '"J E Barth"'
Autor:
J. E. Barth, M.D. Nykerk
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 427:86-90
A practical quantitative definition of the size of the image of a point blurred by chromatic aberration is the diameter of the circle containing 50% of the charged particles. The spot size is proportional to the width of the energy spread. The propor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ca4b8f92be5d183cea775be5ed1c2e9
https://doi.org/10.1016/s0168-9002(98)01531-9
https://doi.org/10.1016/s0168-9002(98)01531-9
Publikováno v:
Microelectronic Engineering. :249-252
Focused ion beam systems equipped with a liquid metal ion source suffer strongly from the Coulomb interactions between ions. The Coulomb interactions not only deteriorate the probe size, but also cause a wider tail on the current density distribution
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4878e250750959b5f373ff676bbab1f
https://doi.org/10.1016/s0167-9317(98)00057-4
https://doi.org/10.1016/s0167-9317(98)00057-4
Publikováno v:
The Journal of Experimental Medicine
The human VH5 family consists of two functional genes and one pseudogene. We have found a novel 1.2-kb VH5 gene transcript in normal fetal liver and cord blood and in transformed B lineage cells. VH5-positive cDNA clones were isolated from precursor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a8186de9ae99ebb744a696aa23a65007
http://europepmc.org/articles/PMC2190842
http://europepmc.org/articles/PMC2190842
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 298:377-382
An optimization tool for the design of electrostatic lens systems with axial symmetry is presented. This tool is based on the second-order electrode method combined with a multivariable numerical optimization procedure. The second-order electrode met
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::397197afb40dd1746c568ce9fd22beb8
https://doi.org/10.1016/0168-9002(90)90639-n
https://doi.org/10.1016/0168-9002(90)90639-n
Publikováno v:
Microelectronic Engineering. 11:325-331
Theory shows that the speed of electron beam pattern generators (EBPG's) can be improved considerably. Above that the availability of high resolution - high sensitive resists will make writing speeds in principle possible for 0.2 μm lithography - wh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e92ce7381e3c774d0902be9f66d16f53
https://doi.org/10.1016/0167-9317(90)90123-b
https://doi.org/10.1016/0167-9317(90)90123-b
Publikováno v:
The Journal of Experimental Medicine
We have previously demonstrated a dramatic preference for utilization of the most JH-proximal VH gene segments in the newborn liver versus adult spleen. We now examine in detail the relative expression of different VH gene families throughout ontogen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ebcfe3c0d7ea151c65abf736b7aad5
https://doi.org/10.1084/jem.171.3.843
https://doi.org/10.1084/jem.171.3.843
Publikováno v:
SPIE Proceedings.
Designers of Charged Particle Optics instruments use different levels of complexity to model the components in the system. They may first describe a round magnetostatic lens just in terms of focal distance, later in the design add an estimated spheri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac2267dec6c07a5252e3c3ccc53d86fe
https://doi.org/10.1117/12.255501
https://doi.org/10.1117/12.255501
Publikováno v:
SPIE Proceedings.
Lens optimization can be based on the very fast approximate axial potential calculation of the Second Order Electrode Method (SOEM). In this method the free optimization parameters are the physical quantities of an electrostatic lens system. The opti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6796cfff85a6176bedcfe4212e75334c
https://doi.org/10.1117/12.221569
https://doi.org/10.1117/12.221569
Publikováno v:
Charged-Particle Optics.
Optimization programs are becoming available to support the designing of complicated lens systems in charged particle optics. By exploring the consequences of design decisions automatically, they can increase the effectiveness of the designer. This i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2bee5ca489526593c4b2cedffb89906c
https://doi.org/10.1117/12.155701
https://doi.org/10.1117/12.155701
Interpolation method for ray tracing in electrostatic fields calculated by the finite element method
Autor:
Jaroslav Chmelik, J. E. Barth
Publikováno v:
Charged-Particle Optics.
In order to do ray tracing in a charge particle optics system it is necessary to be able to evaluate the field at an arbitrary point along the path. The finite element method (FEM) can yield the most accurate values for the potential at the mesh poin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::118786c1b08ccd8c1db8fec30bedd468
https://doi.org/10.1117/12.155693
https://doi.org/10.1117/12.155693