Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Matthew R. Gibbons"'
Publikováno v:
Richards, Wade J; Gibbons, M. R; & Shields, K. C. (2003). Neutron tomography developments and applications. UCD McClellan Nuclear Radiation Center. UC Davis: UCD McClellan Nuclear Radiation Center. Retrieved from: http://www.escholarship.org/uc/item/20n6769j
Neutron radiography has been in use as a nondestructive testing technique for the past fifty years. The neutrons’ unique ability to image certain elements and isotopes that are either completely undetectable or poorly detected by other NDI methods
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::47ea7ca78e9ce20caf55b45317e1edf5
https://doi.org/10.1016/j.apradiso.2004.03.121
https://doi.org/10.1016/j.apradiso.2004.03.121
Publikováno v:
Gibbons, Matthew R.; Richards, Wade J.; & Shields, Kevin. (1999). Optimization of neutron tomography for rapid hydrogen concentration inspection of metal castings. UCD McClellan Nuclear Radiation Center. UC Davis: UCD McClellan Nuclear Radiation Center. Retrieved from: http://www.escholarship.org/uc/item/8jb1v6cd
Hydrogen embrittlement describes a group of phenomena leading to the degradation of metal alloy properties. The hydrogen concentration in the alloy can be used as an indicator for the onset of embrittlement. A neutron tomography system has been optim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da7a86c94b63d109bba6552975175f86
https://doi.org/10.1016/s0168-9002(98)01297-2
https://doi.org/10.1016/s0168-9002(98)01297-2
Publikováno v:
Journal of Magnetism and Magnetic Materials. 190:71-80
We present a magnetic force microscopy (MFM) analysis of arrays of submicron-scale Co dots fabricated by interference lithography. The dots are thin (180-300 A) and are elliptical in shape. MFM of these structures reveals that they relax into highly
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71b78559ff45c93ee4b77de94b14b37a
https://doi.org/10.1016/s0304-8853(98)00267-4
https://doi.org/10.1016/s0304-8853(98)00267-4
Autor:
Matthew R. Gibbons
Publikováno v:
Journal of Magnetism and Magnetic Materials. 186:389-401
We have developed a 3-D micromagnetic algorithm using finite-differences and the iterative matrix solution method, dynamic alternating direction implicit (DADI), for the magnetostatic potential equation. As in previous work, the magnetization is inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3399c80e62473cfe10370415689b2dca
https://doi.org/10.1016/s0304-8853(98)00105-x
https://doi.org/10.1016/s0304-8853(98)00105-x
Autor:
Matthew R. Gibbons, Dennis W. Hewett
Publikováno v:
Journal of Computational Physics. 130:54-66
We investigate the linear dispersion and other properties of the Darwin Direct Implicit Particle-in-cell (DADIPIC) method in order to deduce guidelines for its use in the simulation of long time-scale, kinetic phenomena in plasmas. The Darwin part of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8fb22c4c010e8817b34a9d664ba94a67
https://doi.org/10.1006/jcph.1996.5475
https://doi.org/10.1006/jcph.1996.5475
Autor:
Dennis W. Hewett, Matthew R. Gibbons
Publikováno v:
Journal of Computational Physics. 120:231-247
We describe a new algorithm for simulating low frequency, kinetic phenomena in plasmas. Darwin direct implicit particle-in-cell (DADIPIC), as its name implies, is a combination of the Darwin and direct implicit methods. Through the Darwin method the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43fb64b6cd62af1b68a74b762ac5dde0
https://doi.org/10.1006/jcph.1995.1160
https://doi.org/10.1006/jcph.1995.1160
Experimental study of playback giant magnetic resonance head nonlinearity in perpendicular recording
Publikováno v:
Journal of Applied Physics. 93:6757-6759
In this article, nonlinear distortions of the playback giant magnetic resonance (GMR) sensor in perpendicular recording are characterized in both time and frequency domains. We use three perpendicular media with different Mrt (0.46, 0.6, and 0.8 emu/
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2892d8a5ee628eafd84fb88177740655
https://doi.org/10.1063/1.1557717
https://doi.org/10.1063/1.1557717
Publikováno v:
Journal of Applied Physics. 89:7359-7361
We investigated the feasibility of a spin-dependent tunneling (SDT) read head with a parallel hard bias. In this scheme, the longitudinal biasing to the free layer is provided by fringe fields from a hard magnet which is fabricated over or under the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0e6edc08940c48d56e8fb63a63ff35c
https://doi.org/10.1063/1.1361051
https://doi.org/10.1063/1.1361051
Publikováno v:
Journal of Applied Physics. 89:6949-6951
The physical properties of spin valve films grown on the surface of nano-oxide layers were studied as a function of Cu spacer layer thickness. In comparison to identical structures without the oxide surface, the films exhibited an increase in ΔR/R o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60ab7eb069847a39a2f5de25e34de052
https://doi.org/10.1063/1.1356721
https://doi.org/10.1063/1.1356721
Publikováno v:
IEEE Transactions on Magnetics. 34:915-917
In this paper, we present results of a study on Ni/sub 81/Fe/sub 19/Cu MLs deposited using a four-source DC magnetron sputtering system operated in planetary mode. A significant change of GMR value with deposition conditions, especially base pressure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b1a250237f97358c1c5c79a3310e7d3
https://doi.org/10.1109/20.706310
https://doi.org/10.1109/20.706310