The Experts below are selected from a list of 93459 Experts worldwide ranked by ideXlab platform
Nirmalya Ghosh - One of the best experts on this subject based on the ideXlab platform.
-
quantitative fluorescence and Elastic Scattering tissue polarimetry using an eigenvalue calibrated spectroscopic mueller matrix system
Optics Express, 2013Co-Authors: Jalpa Soni, Harsh Purwar, Harshit Lakhotia, Shubham Chandel, Chitram Banerjee, Uday Kumar, Nirmalya GhoshAbstract:A novel spectroscopic Mueller matrix system has been developed and explored for both fluorescence and Elastic Scattering polarimetric measurements from biological tissues. The 4 × 4 Mueller matrix measurement strategy is based on sixteen spectrally resolved (λ = 400 - 800 nm) measurements performed by sequentially generating and analyzing four elliptical polarization states. Eigenvalue calibration of the system ensured high accuracy of Mueller matrix measurement over a broad wavelength range, either for forward or backScattering geometry. The system was explored for quantitative fluorescence and Elastic Scattering spectroscopic polarimetric studies on normal and precancerous tissue sections from human uterine cervix. The fluorescence spectroscopic Mueller matrices yielded an interesting diattenuation parameter, exhibiting differences between normal and precancerous tissues.
-
quantitative fluorescence and Elastic Scattering tissue polarimetry using an eigenvalue calibrated spectroscopic mueller matrix system
Optics Express, 2013Co-Authors: Jalpa Soni, Harsh Purwar, Harshit Lakhotia, Shubham Chandel, Chitram Banerjee, Uday Kumar, Nirmalya GhoshAbstract:A novel spectroscopic Mueller matrix system has been developed and explored for both fluorescence and Elastic Scattering polarimetric measurements from biological tissues. The 4 × 4 Mueller matrix measurement strategy is based on sixteen spectrally resolved (λ = 400 - 800 nm) measurements performed by sequentially generating and analyzing four elliptical polarization states. Eigenvalue calibration of the system ensured high accuracy of Mueller matrix measurement over a broad wavelength range, either for forward or backScattering geometry. The system was explored for quantitative fluorescence and Elastic Scattering spectroscopic polarimetric studies on normal and precancerous tissue sections from human uterine cervix. The fluorescence spectroscopic Mueller matrices yielded an interesting diattenuation parameter, exhibiting differences between normal and precancerous tissues.
Jalpa Soni - One of the best experts on this subject based on the ideXlab platform.
-
quantitative fluorescence and Elastic Scattering tissue polarimetry using an eigenvalue calibrated spectroscopic mueller matrix system
Optics Express, 2013Co-Authors: Jalpa Soni, Harsh Purwar, Harshit Lakhotia, Shubham Chandel, Chitram Banerjee, Uday Kumar, Nirmalya GhoshAbstract:A novel spectroscopic Mueller matrix system has been developed and explored for both fluorescence and Elastic Scattering polarimetric measurements from biological tissues. The 4 × 4 Mueller matrix measurement strategy is based on sixteen spectrally resolved (λ = 400 - 800 nm) measurements performed by sequentially generating and analyzing four elliptical polarization states. Eigenvalue calibration of the system ensured high accuracy of Mueller matrix measurement over a broad wavelength range, either for forward or backScattering geometry. The system was explored for quantitative fluorescence and Elastic Scattering spectroscopic polarimetric studies on normal and precancerous tissue sections from human uterine cervix. The fluorescence spectroscopic Mueller matrices yielded an interesting diattenuation parameter, exhibiting differences between normal and precancerous tissues.
-
quantitative fluorescence and Elastic Scattering tissue polarimetry using an eigenvalue calibrated spectroscopic mueller matrix system
Optics Express, 2013Co-Authors: Jalpa Soni, Harsh Purwar, Harshit Lakhotia, Shubham Chandel, Chitram Banerjee, Uday Kumar, Nirmalya GhoshAbstract:A novel spectroscopic Mueller matrix system has been developed and explored for both fluorescence and Elastic Scattering polarimetric measurements from biological tissues. The 4 × 4 Mueller matrix measurement strategy is based on sixteen spectrally resolved (λ = 400 - 800 nm) measurements performed by sequentially generating and analyzing four elliptical polarization states. Eigenvalue calibration of the system ensured high accuracy of Mueller matrix measurement over a broad wavelength range, either for forward or backScattering geometry. The system was explored for quantitative fluorescence and Elastic Scattering spectroscopic polarimetric studies on normal and precancerous tissue sections from human uterine cervix. The fluorescence spectroscopic Mueller matrices yielded an interesting diattenuation parameter, exhibiting differences between normal and precancerous tissues.
K Rusek - One of the best experts on this subject based on the ideXlab platform.
-
strong coupling effects in near barrier heavy ion Elastic Scattering
arXiv: Nuclear Experiment, 2014Co-Authors: N Keeley, K W Kemper, K RusekAbstract:Accurate Elastic Scattering angular distribution data measured at bombarding energies just above the Coulomb barrier have shapes that can markedly differ from or be the same as the expected classical Fresnel Scattering pattern depending on the structure of the projectile, the target or both. Examples are given such as 18O + 184W and 16O + 148,152Sm where the expected rise above Rutherford Scattering due to Coulomb-nuclear interference is damped by coupling to the target excited states, and the extreme case of 11Li Scattering, where coupling to the 9Li + n + n continuum leads to an Elastic Scattering shape that cannot be reproduced by any standard optical model parameter set. The recent availability of high quality 6He, 11Li and 11Be data provides further examples of the influence that coupling effects can have on Elastic Scattering. Conditions for strong projectile-target coupling effects are presented with special emphasis on the importance of the beam-target charge combination being large enough to bring about the strong coupling effects. Several measurements are proposed that can lead to further understanding of strong coupling effects by both inElastic excitation and nucleon transfer on near-barrier Elastic Scattering. A final note on the anomalous nature of 8B Elastic Scattering is presented as it possesses a more or less normal Fresnel Scattering shape whereas one would a priori not expect this due to the very low breakup threshold of 8B. The special nature of 11Li is presented as it is predicted that no matter how far above the Coulomb barrier the Elastic Scattering is measured, its shape will not appear as Fresnel like whereas the Elastic Scattering of all other loosely bound nuclei studied to date should eventually do so as the incident energy is increased, making both 8B and 11Li truly "exotic".
-
strong coupling effects in near barrier heavy ion Elastic Scattering
European Physical Journal A, 2014Co-Authors: N Keeley, K W Kemper, K RusekAbstract:Accurate Elastic Scattering angular distribution data measured at bombarding energies just above the Coulomb barrier have shapes that can markedly differ from or be the same as the expected classical Fresnel Scattering pattern depending on the structure of the projectile, the target or both. Examples are given such as 18O + 184W and 16O + 148, 152Sm, where the expected rise above Rutherford Scattering due to Coulomb-nuclear interference is damped by coupling to the target excited states, and the extreme case of 11Li Scattering, where coupling to the 9Li + n + n continuum leads to an Elastic Scattering shape that cannot be reproduced by any standard optical model parameter set. An early indication that the projectile structure can modify the Elastic Scattering angular distribution was the large vector analyzing powers observed in polarised 6Li Scattering. The recent availability of high-quality 6He, 11Li and 11Be data provides further examples of the influence that coupling effects can have on Elastic Scattering. Conditions for strong projectile-target coupling effects are presented with special emphasis on the importance of the beam-target charge combination being large enough to bring about the strong coupling effects. Several measurements are proposed that can lead to further understanding of strong coupling effects by both inElastic excitation and nucleon transfer on near-barrier Elastic Scattering. A final note on the anomalous nature of 8B Elastic Scattering is presented as it possesses a more or less normal Fresnel Scattering shape whereas one would a priori not expect this due to the very low breakup threshold of 8B . The special nature of 11Li is presented as it is predicted that no matter how far above the Coulomb barrier the Elastic Scattering is measured, its shape will not appear as Fresnel like whereas the Elastic Scattering of all other loosely bound nuclei studied to date should eventually do so as the incident energy is increased, making both 8B and 11Li truly “exotic”.
-
Elastic Scattering and reactions of light exotic beams
Progress in Particle and Nuclear Physics, 2009Co-Authors: N Keeley, N Alamanos, K W Kemper, K RusekAbstract:Abstract The present work provides a literature survey of Elastic Scattering of exotic nuclei from 6He to 17F. It presents a set of definitions that allow different analyses to be put into a common language. A calculational approach is proposed that yields consistent results across different beams and targets so that conclusions concerning the influence of virtual and real breakup as well as transfer couplings on the Elastic Scattering may be drawn. Calculations of Elastic Scattering around the Coulomb barrier are emphasised, employing a Pb target whose large Z allows the interplay between nuclear and Coulomb forces to be exploited to maximise possible effects arising from proton or neutron haloes or skins. A series of test calculations is performed and where possible compared to data, demonstrating that there are instances where coupling to transfer channels can have a large effect on the Elastic Scattering angular distributions. By careful choice of target/beam combination, different aspects of the coupling effects may be emphasised.
N Keeley - One of the best experts on this subject based on the ideXlab platform.
-
important influence of single neutron stripping coupling on near barrier 8li 90zr quasi Elastic Scattering
European Physical Journal A, 2015Co-Authors: A Pakou, N Keeley, D Pierroutsakou, M Mazzocco, L Acosta, X Aslanoglou, A Boiano, C Boiano, D Carbone, M CavallaroAbstract:Quasi-Elastic Scattering data were obtained for the radioactive nucleus 8Li on a 90Zr target at the near-barrier energy of 18.5MeV over the angular range $ \theta_{lab}=15^{\circ}$ to 80°. They were analyzed within the coupled channels and coupled reaction channels frameworks pointing to a strong coupling effect for single neutron stripping, in contrast to 6, 7 Li + 90 Zr Elastic Scattering at similar energies, a non-trivial result linked to detailed differences in the structure of these Li isotopes.
-
strong coupling effects in near barrier heavy ion Elastic Scattering
arXiv: Nuclear Experiment, 2014Co-Authors: N Keeley, K W Kemper, K RusekAbstract:Accurate Elastic Scattering angular distribution data measured at bombarding energies just above the Coulomb barrier have shapes that can markedly differ from or be the same as the expected classical Fresnel Scattering pattern depending on the structure of the projectile, the target or both. Examples are given such as 18O + 184W and 16O + 148,152Sm where the expected rise above Rutherford Scattering due to Coulomb-nuclear interference is damped by coupling to the target excited states, and the extreme case of 11Li Scattering, where coupling to the 9Li + n + n continuum leads to an Elastic Scattering shape that cannot be reproduced by any standard optical model parameter set. The recent availability of high quality 6He, 11Li and 11Be data provides further examples of the influence that coupling effects can have on Elastic Scattering. Conditions for strong projectile-target coupling effects are presented with special emphasis on the importance of the beam-target charge combination being large enough to bring about the strong coupling effects. Several measurements are proposed that can lead to further understanding of strong coupling effects by both inElastic excitation and nucleon transfer on near-barrier Elastic Scattering. A final note on the anomalous nature of 8B Elastic Scattering is presented as it possesses a more or less normal Fresnel Scattering shape whereas one would a priori not expect this due to the very low breakup threshold of 8B. The special nature of 11Li is presented as it is predicted that no matter how far above the Coulomb barrier the Elastic Scattering is measured, its shape will not appear as Fresnel like whereas the Elastic Scattering of all other loosely bound nuclei studied to date should eventually do so as the incident energy is increased, making both 8B and 11Li truly "exotic".
-
strong coupling effects in near barrier heavy ion Elastic Scattering
European Physical Journal A, 2014Co-Authors: N Keeley, K W Kemper, K RusekAbstract:Accurate Elastic Scattering angular distribution data measured at bombarding energies just above the Coulomb barrier have shapes that can markedly differ from or be the same as the expected classical Fresnel Scattering pattern depending on the structure of the projectile, the target or both. Examples are given such as 18O + 184W and 16O + 148, 152Sm, where the expected rise above Rutherford Scattering due to Coulomb-nuclear interference is damped by coupling to the target excited states, and the extreme case of 11Li Scattering, where coupling to the 9Li + n + n continuum leads to an Elastic Scattering shape that cannot be reproduced by any standard optical model parameter set. An early indication that the projectile structure can modify the Elastic Scattering angular distribution was the large vector analyzing powers observed in polarised 6Li Scattering. The recent availability of high-quality 6He, 11Li and 11Be data provides further examples of the influence that coupling effects can have on Elastic Scattering. Conditions for strong projectile-target coupling effects are presented with special emphasis on the importance of the beam-target charge combination being large enough to bring about the strong coupling effects. Several measurements are proposed that can lead to further understanding of strong coupling effects by both inElastic excitation and nucleon transfer on near-barrier Elastic Scattering. A final note on the anomalous nature of 8B Elastic Scattering is presented as it possesses a more or less normal Fresnel Scattering shape whereas one would a priori not expect this due to the very low breakup threshold of 8B . The special nature of 11Li is presented as it is predicted that no matter how far above the Coulomb barrier the Elastic Scattering is measured, its shape will not appear as Fresnel like whereas the Elastic Scattering of all other loosely bound nuclei studied to date should eventually do so as the incident energy is increased, making both 8B and 11Li truly “exotic”.
-
Elastic Scattering and reactions of light exotic beams
Progress in Particle and Nuclear Physics, 2009Co-Authors: N Keeley, N Alamanos, K W Kemper, K RusekAbstract:Abstract The present work provides a literature survey of Elastic Scattering of exotic nuclei from 6He to 17F. It presents a set of definitions that allow different analyses to be put into a common language. A calculational approach is proposed that yields consistent results across different beams and targets so that conclusions concerning the influence of virtual and real breakup as well as transfer couplings on the Elastic Scattering may be drawn. Calculations of Elastic Scattering around the Coulomb barrier are emphasised, employing a Pb target whose large Z allows the interplay between nuclear and Coulomb forces to be exploited to maximise possible effects arising from proton or neutron haloes or skins. A series of test calculations is performed and where possible compared to data, demonstrating that there are instances where coupling to transfer channels can have a large effect on the Elastic Scattering angular distributions. By careful choice of target/beam combination, different aspects of the coupling effects may be emphasised.
Uday Kumar - One of the best experts on this subject based on the ideXlab platform.
-
quantitative fluorescence and Elastic Scattering tissue polarimetry using an eigenvalue calibrated spectroscopic mueller matrix system
Optics Express, 2013Co-Authors: Jalpa Soni, Harsh Purwar, Harshit Lakhotia, Shubham Chandel, Chitram Banerjee, Uday Kumar, Nirmalya GhoshAbstract:A novel spectroscopic Mueller matrix system has been developed and explored for both fluorescence and Elastic Scattering polarimetric measurements from biological tissues. The 4 × 4 Mueller matrix measurement strategy is based on sixteen spectrally resolved (λ = 400 - 800 nm) measurements performed by sequentially generating and analyzing four elliptical polarization states. Eigenvalue calibration of the system ensured high accuracy of Mueller matrix measurement over a broad wavelength range, either for forward or backScattering geometry. The system was explored for quantitative fluorescence and Elastic Scattering spectroscopic polarimetric studies on normal and precancerous tissue sections from human uterine cervix. The fluorescence spectroscopic Mueller matrices yielded an interesting diattenuation parameter, exhibiting differences between normal and precancerous tissues.
-
quantitative fluorescence and Elastic Scattering tissue polarimetry using an eigenvalue calibrated spectroscopic mueller matrix system
Optics Express, 2013Co-Authors: Jalpa Soni, Harsh Purwar, Harshit Lakhotia, Shubham Chandel, Chitram Banerjee, Uday Kumar, Nirmalya GhoshAbstract:A novel spectroscopic Mueller matrix system has been developed and explored for both fluorescence and Elastic Scattering polarimetric measurements from biological tissues. The 4 × 4 Mueller matrix measurement strategy is based on sixteen spectrally resolved (λ = 400 - 800 nm) measurements performed by sequentially generating and analyzing four elliptical polarization states. Eigenvalue calibration of the system ensured high accuracy of Mueller matrix measurement over a broad wavelength range, either for forward or backScattering geometry. The system was explored for quantitative fluorescence and Elastic Scattering spectroscopic polarimetric studies on normal and precancerous tissue sections from human uterine cervix. The fluorescence spectroscopic Mueller matrices yielded an interesting diattenuation parameter, exhibiting differences between normal and precancerous tissues.
