The Experts below are selected from a list of 186 Experts worldwide ranked by ideXlab platform
S. F. C. O'rourke - One of the best experts on this subject based on the ideXlab platform.
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Halfway House variational continuum distorted waves and anisotropy in electron capture to the continuum: the Thomas double scattering limit
Journal of Physics B: Atomic Molecular and Optical Physics, 1992Co-Authors: D S F Crothers, S. F. C. O'rourkeAbstract:The Halfway House phase-integral variational continuum distorted wave (PIVCDW) theory of non-relativistic Thomas double scattering electron capture is developed within the distorted wave perturbation approximation and has the distinct advantage of satisfying all known short and long range boundary conditions. Closed analytical results are obtained for both first-order (PIVCDW1) and second-order (PIVCDW2) amplitudes of this theory for transitions from an initially excited n'l'm' state to a final nlm hydrogenic one-electron state. Both the first- and second-order amplitudes contain the correct single and double scattering form respectively at asymptotically high velocities. Moreover the PIVCDW2 approximation is used to derive simple analytic formulae for the double differential cross section (DDCS) for electron capture to the continuum.
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Halfway House variational continuum distorted wave theory: high energy cross sections in the distorted wave perturbation approximation
Zeitschrift f�r Physik D Atoms Molecules and Clusters, 1992Co-Authors: S. F. C. O'rourke, Derrick CrothersAbstract:The total cross section for charge transfer at high but non-relativistic energy is investigated within a new time-independent wave version of the Halfway-House phase integral variational continuum distorted wave formalism, using simple first order perturbation theory. Following Crothers, Dube and Brown this theory satisfies all known short and long range Coulomb boundary conditions which is essential if intermediate elastic divergences are to be avoided. The discussion is specialised to the particular case ofls →ls capture. Numerical results for this amplitude are obtained by a double numerical integration. Wave results derived for the capture process $$P^{Z_P^ + } + (T^{Z_T^ + } + e^ - ) \to (P^{Z_P^ + } + e^ - ) + T^{Z_T^ + } $$ in the caseZT = 1 =ZP are compared with various theoretical impact parameter models and experimental data. Representative distributions of the total cross sections are presented as a function of the impact energy.
Erin M. Kerrison - One of the best experts on this subject based on the ideXlab platform.
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Risky business, risk assessment, and other heteronormative misnomers in women’s community corrections and reentry planning
eScholarship University of California, 2018Co-Authors: Erin M. KerrisonAbstract:© 2017, © The Author(s) 2017. This article uses ethnographic and interview data to explore how Halfway House and community corrections staff in a women’s Halfway House in the northeastern region of the U.S. police women’s sexuality and the ensuing complications of being queer and under supervision. In this setting, women are required to create a Reentry Home Plan that is approved by Community Corrections Officers, putting into tension some women’s newly emerging queer identity and/or nonnormative relationship schema that they see as “healthier” and more stable than heterosexual relationships, with Probation or Parole Officers’ heteronormative ideals that disapprove nontraditional home plans. This study shows how these women negotiate a marginalized sexual identity and resist biased forms of heteronormative surveillance that extend beyond the legislative parameters of community corrections supervision. It also illustrates the tensions between correctional staff, who view residents’ nonnormative relationships as potential sources of risk, and the supervised women, as they develop community release plans
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Risky business, risk assessment, and other heteronormative misnomers in women’s community corrections and reentry planning
Punishment & Society, 2017Co-Authors: Erin M. KerrisonAbstract:This article uses ethnographic and interview data to explore how Halfway House and community corrections staff in a women’s Halfway House in the northeastern region of the U.S. police women’s sexuality and the ensuing complications of being queer and under supervision. In this setting, women are required to create a Reentry Home Plan that is approved by Community Corrections Officers, putting into tension some women’s newly emerging queer identity and/or nonnormative relationship schema that they see as “healthier” and more stable than heterosexual relationships, with Probation or Parole Officers’ heteronormative ideals that disapprove nontraditional home plans. This study shows how these women negotiate a marginalized sexual identity and resist biased forms of heteronormative surveillance that extend beyond the legislative parameters of community corrections supervision. It also illustrates the tensions between correctional staff, who view residents’ nonnormative relationships as potential sources of risk, and the supervised women, as they develop community release plans.
D S F Crothers - One of the best experts on this subject based on the ideXlab platform.
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Halfway House variational continuum distorted waves and anisotropy in electron capture to the continuum: the Thomas double scattering limit
Journal of Physics B: Atomic Molecular and Optical Physics, 1992Co-Authors: D S F Crothers, S. F. C. O'rourkeAbstract:The Halfway House phase-integral variational continuum distorted wave (PIVCDW) theory of non-relativistic Thomas double scattering electron capture is developed within the distorted wave perturbation approximation and has the distinct advantage of satisfying all known short and long range boundary conditions. Closed analytical results are obtained for both first-order (PIVCDW1) and second-order (PIVCDW2) amplitudes of this theory for transitions from an initially excited n'l'm' state to a final nlm hydrogenic one-electron state. Both the first- and second-order amplitudes contain the correct single and double scattering form respectively at asymptotically high velocities. Moreover the PIVCDW2 approximation is used to derive simple analytic formulae for the double differential cross section (DDCS) for electron capture to the continuum.
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phase integral Halfway House variational continuum distorted waves
Journal of Physics B, 1991Co-Authors: G J N Brown, D S F CrothersAbstract:Symmetric resonant charge transfer in proton-hydrogen collisions is examined theoretically using phase-integral Halfway-House variational continuum distorted wave theory. The formulation involves the factorization of the scattering matrix into two Moller matrices, one describing the motion for - infinity or=t>or=O+ . The authors use outgoing continuum distorted waves for t(O and incoming continuum distorted waves for t)O with a matching at t=O, the associated heavy particle motion remaining incoming for t(O and outgoing for t)O. Results for total cross sections are presented and compared to previous theoretical models and experimental results. Differential cross sections in the centre-of-mass range 0-3.2 mrad are presented at 25, 60 and 125 keV and are compared with the same theoretical models and previous experimental results.
Marie Auclair - One of the best experts on this subject based on the ideXlab platform.
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Luminescence investigation of loess and tephra from Halfway House section, Central Alaska
Quaternary Geochronology, 2007Co-Authors: Marie Auclair, Michel Lamothe, France Lagroix, Subir K. BanerjeeAbstract:Infrared stimulated luminescence (IRSL) properties of the Old Crow tephra and bracketing loess from the Halfway House site in Central Alaska are investigated in order to test newly developed techniques, including SAR and recently proposed fading corrections. Loess samples investigated show a standard growth of luminescence with regenerative dose while the tephra sample is less sensitive by an order of magnitude and saturates at lower dose. The growth curves obtained using multiple-aliquots regeneration (MAR) saturate at a higher value than those with the single-aliquot regeneration (SAR) protocol. Fading rate determinations for these samples are shown to be imprecise and no noticeable difference was observed between loess and tephra materials. Anomalous fading corrections using an average g value of 5% are applied to the natural test dose signal intensity using the dose rate correction (DRC) method. IRSL ages obtained for loess are in agreement with the expected age while the tephra age is lower than expected, suggesting the measured fading rate is underestimated for this material.
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Luminescence investigation of loess and tephra from Halfway House section, Central Alaska
Quaternary Geochronology, 2007Co-Authors: Marie Auclair, Michel Lamothe, France Lagroix, Subir K. BanerjeeAbstract:International audienceInfrared stimulated luminescence (IRSL) properties of the Old Crow tephra and bracketing loess from the Halfway House site in Central Alaska are investigated in order to test newly developed techniques, including SAR and recently proposed fading corrections. Loess samples investigated show a standard growth of luminescence with regenerative dose while the tephra sample is less sensitive by an order of magnitude and saturates at lower dose. The growth curves obtained using multiple-aliquots regeneration (MAR) saturate at a higher value than those with the single-aliquot regeneration (SAR) protocol. Fading rate determinations for these samples are shown to be imprecise and no noticeable difference was observed between loess and tephra materials. Anomalous fading corrections using an average g value of 5% are applied to the natural test dose signal intensity using the dose rate correction (DRC) method. IRSL ages obtained for loess are in agreement with the expected age while the tephra age is lower than expected, suggesting the measured fading rate is underestimated for this material
Subir K. Banerjee - One of the best experts on this subject based on the ideXlab platform.
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Luminescence investigation of loess and tephra from Halfway House section, Central Alaska
Quaternary Geochronology, 2007Co-Authors: Marie Auclair, Michel Lamothe, France Lagroix, Subir K. BanerjeeAbstract:Infrared stimulated luminescence (IRSL) properties of the Old Crow tephra and bracketing loess from the Halfway House site in Central Alaska are investigated in order to test newly developed techniques, including SAR and recently proposed fading corrections. Loess samples investigated show a standard growth of luminescence with regenerative dose while the tephra sample is less sensitive by an order of magnitude and saturates at lower dose. The growth curves obtained using multiple-aliquots regeneration (MAR) saturate at a higher value than those with the single-aliquot regeneration (SAR) protocol. Fading rate determinations for these samples are shown to be imprecise and no noticeable difference was observed between loess and tephra materials. Anomalous fading corrections using an average g value of 5% are applied to the natural test dose signal intensity using the dose rate correction (DRC) method. IRSL ages obtained for loess are in agreement with the expected age while the tephra age is lower than expected, suggesting the measured fading rate is underestimated for this material.
