jhu logo

Plasma Spectroscopy Group

Publications

2016

  1. M. P. Valdivia, D. Stutman, C. Stoeckl, C. Mileham, I. Begishev, W. Theobald, J. Bromage, S.P. Regan, S. R. Klein, G. Muñoz-Cordovez, M. Vescovi, V. Valenzuela-Villaseca, F. Veloso, Rev. Sci. Instrum. 87, 11D501 (2016)
  2. M. P. Valdivia, D. Stutman, C. Stoeckl, W. Theobald, C. Mileham, I. A. Begishev, J. Bromage, and S. P. Regan, Rev. Sci. Instrum. 87, 023505 (2016)

2015

  1. M. P. Valdivia, D. Stutman, and M. Finkenthal, “A Talbot-Lau X-Ray Deflectometer as a High Energy Density Plasma Diagnostic”, submitted to special issue of the IEEE journal Transactions on Plasma Science, Symposium on Fusion Engineering
  2. D. Stutman, M. P. Valdivia, and M. Finkenthal, “X-ray Moiré Deflectometry Using Synthetic Reference Images”, Applied Optics 54(19) 5956-5961
  3. M. P. Valdivia, D. Stutman, C. Stoeckl, C. S. Mileham, I. A. Begishev, J. Bromage, and S. P. Regan, IEEE Transactions on Plasma Science, vol.PP, no.99, pp.1-7, (2015)
  4. M. P. Valdivia, D. Stutman, and M. Finkenthal, Applied Optics 54(10) 2577-2583 (2015)
  5. D. Stutman, M. P. Valdivia, and M. Finkenthal, Applied Optics 54(19) 5956-5961 (2015)
  6. M. P. Valdivia, E. S. Wyndham, and M. Favre, IEEE Transactions on Plasma Science 43(8), pp.2553-2557 (2015)
  7. D. J. Clayton, M. Berninger, A. Meidinger, D. Stutman, and M. P. Valdivia, Pulsed Power Conference (PPC), 2015 IEEE, pp. 1-5. IEEE, 2015.

2014

  1. M. P. Valdivia, D. Stutman, and M. Finkenthal, “Z-effective HEDP diagnostic through simultaneous refraction and attenuation measurements with a Talbot-Lau X-ray Moiré Deflectometer”, Applied Optics 54(10) 2577-2583
  2. E. M. Hollmann, C. Brandt, B. Hudson, D. Kumar, D. Nishijima and A. Yu. Pigarov. Investigation of mechanisms for He-I emission radial profile broadening in a weakly ionized cylindrical helium plasma with recombining edge
  3. D Kumar, M Parman, D Stutman and M Finkenthal. Transmission grating based imaging spectrometers in the XUV and VUV for various plasmas
  4. A. Sarapata, J. W. Stayman, M. Finkenthal, J. H. Siewerdsen, F. Pfeiffer, D. Stutman. High energy x-ray phase contrast CT using glancing-angle grating interferometers
  5. D. Stutman. “Grating X-ray Phase-Contrast Imaging for Density Diagnostic of High Energy Laboratory Plasmas.” Presented at the International Symposium on BioMedical Applications of X-Ray Phase Contrast Imaging (IMXP) 2014. Download the PowerPoint presentation.
  6. M. P. Valdivia, D. Stutman and M. Finkenthal. “Moiré deflectometry using the Talbot-Lau interferometer as refraction diagnostic for High Energy Density plasmas at energies below 10 keV.” Rev. Sci. Instrum. 85, 073702 (2014).

2013

  1. Stutman, D., et al. “High energy x-ray phase-contrast imaging using glancing angle grating interferometers.” SPIE Medical Imaging. International Society for Optics and Photonics, 2013.
  2. M. P. Valdivia, D. Stutman, M. Finkenthal. Talbot-Lau based Moiré deflectometry with non-coherent sources as potential High Energy Density plasma diagnostic. Journal of Applied Physics 114, 163302.

2012

  1. D. Kumar et. al. Space resolved XUV/VUV spectroscopy of low temperature plasmas. Presented on Nov 1, 2012 at the 54th APS DPP conference, Providence, USA.
  2. D. J. Clayton et. al. Algorithm Development for Multi-Energy Soft-X-Ray based T_e Profile Reconstruction. Presented on Oct 31, 2012 at the 54th APS DPP conference, Providence, USA.
  3. D J Clayton, K Tritz, D Stutman, M Finkenthal, S M Kaye, D Kumar, B P LeBlanc, S Paul and S A Sabbagh. Multi-energy soft-x-ray technique for impurity transport measurements in the fusion plasma edge. Plasma Phys. Control. Fusion, 54, 105022 (2012).Link. PDF.
  4. D. Stutman, K. Tritz and M. Finkenthal. Multi-energy x-ray imaging and sensing for diagnostic and control of the burning plasma. Rev. Sci. Instrum. 83, 10D521 (2012). PDF.
  5. D. J. Clayton, M. A. Jaworski, D. Kumar, D. Stutman, M. Finkenthal and K. Tritz. Divertor electron temperature and impurity diffusion measurements with a spectrally resolved imaging radiometer. Rev. Sci. Instrum. 83, 10D521 (2012). Link. PDF.
  6. D. Kumar, D. J. Clayton, M. Parman, D. Stutman, K. Tritz, and M. Finkenthal. Dual transmission grating based imaging radiometer for tokamak edge and divertor plasmas. Rev. Sci. Instrum. 83, 10E511 (2012). Link. PDF.
  7. K. Tritz, D. J. Clayton, D. Stutman, and M. Finkenthal. Compact “diode-based” multi-energy soft x-ray diagnostic for NSTX. Rev. Sci. Instrum. 83, 10E109 (2012). Link. PDF.
  8. D. Kumar, M. Finkenthal, D. Stutman, R. E. Bell, D. J. Clayton, A. Diallo, B. P. LeBlanc, M. Podesta and K. Tritz. Impurity analysis of NSTX using a transmission grating-based imaging spectrometer. Plasma Phys. Control. Fusion, 54, 065010 (2012).Link. PDF.
  9. D. Stutman et. al., Multi-Energy X-ray imaging and sensing for diagnostic and control of the burning plasma, 2012. HTPD poster.
  10. D. J. Clayton et. al., Divertor Electron Temperature and Impurity Diffusion Measurements with a Spectrally Resolved Imaging Radiometer, 2012. HTPD poster.
  11. K. Tritz et. al., Compact ‘Diode-based’ Multi-Energy Soft X-ray Diagnostic for NSTX, 2012. HTPD Poster.
  12. D. Kumar et. al., Dual transmission grating based imaging radiometer for tokamak edge and divertor plasmas, 2012. HTPD poster.
  13. Stutman, Dan, and Michael Finkenthal. “K-edge and mirror filtered X-ray grating interferometers.” AIP Conference Proceedings. Vol. 1466. 2012.
  14. Stutman, D., and M. Finkenthal. “Glancing angle Talbot-Lau grating interferometers for phase contrast imaging at high x-ray energy.” Applied Physics Letters 101.9 (2012): 091108-091108.
  15. Dan Stutman, Michael Finkenthal, Joseph Webster Stayman, Jeffrey H. Siewerdsen, John A. Carrino, “Development of a Phase-Contrast X-ray Imaging System for Large Joints”, Radiological Society of North America 2012 Scientific Assembly and Annual Meeting; November 25- November 30, 2012, Chicago, IL.

2011

  1. D. Stutman et. al. SXR to VUV imaging diagnostics for NSTX Upgrade. Presented on Nov 16, 2011 at the 53rd APS DPP conference, Salt Lake City, USA.
  2. K. Tritz et. al. The ME-SXR fast electron temperature diagnostic for NSTX. Presented on Nov 16, 2011 at the 53rd APS DPP conference, Salt Lake City, USA.
  3. D. J. Clayton et. al. Studies of impurity transport in NSTX with the edge multi-energy SXR diagnostic. Presented on Nov 16, 2011 at the 53rd APS DPP conference, Salt Lake City, USA.
  4. D. Kumar et. al. Low temperature tungsten and other fusion relevant element spectroscopy on a Penning Ionization Discharge. Presented on Nov 15, 2011 at the 53rd APS DPP conference, Salt Lake City, USA.
  5. D. Kumar et. al. Low temperature tungsten spectroscopy on a Penning Ionization Discharge. Presented on July 19/21, 2011 at the 17th international conference on atomic processes in plasmas, Belfast, UK.
  6. D. Clayton et. al. Edge transport measurements with the new multi-energy soft-x-ray diagnostic on NSTX. Presented on June 27, 2011 at the 38th EPS conference on plasma physics, Strasbourg, France.
  7. D. Kumar et. al. Space resolved impurity detection in the EUV range using a transmission grating based imaging spectrometer on NSTX. Presented on June 30, 2011 at the 38th EPS conference on plasma physics, Strasbourg, France.
  8. D. Stutman et al. Multi-energy SXR imaging diagnostics for fusion experiments. Proceedings of the 38th EPS Conference on Plasma Physics, Strasbourg, 2011, Paper P5.049. Link. PDF.
  9. D. Kumar et al. Impurity analysis using a space resolved transmission grating based imaging spectrometer on NSTX. Proceedings of the 38th EPS Conference on Plasma Physics, Strasbourg, 2011, Paper P4.047. Link. PDF.
  10. D. Clayton et al. Edge transport measurements with the new multi-energy soft-x-ray diagnostic on NSTX. Proceedings of the 38th EPS Conference on Plasma Physics, Strasbourg, 2011, Paper P1.134. Link. PDF.
  11. D. Clayton et. al. High-resolution edge impurity transport measurements with the ME-SXR diagnostic. Presented on May 23, 2011 at the NSTX Monday Physics Meeting.
  12. D. Kumar et. al. NSTX impurity analysis using transmission grating imaging spectrometer. Presented on May 23, 2011 at the NSTX Monday Physics Meeting.
  13. D. Clayton et. al. Impurity transport measurements with the new Multi-Energy Soft-X-ray Diagnostic on NSTX. Presented on April 7, 2011 at the Transport Task Force Workshop in San Diego, CA.
  14. Stutman, Dan, et al. “Talbot phase-contrast x-ray imaging for the small joints of the hand.” Physics in medicine and biology 56.17 (2011): 5697.
  15. Stutman, D., and M. Finkenthal. “Talbot-Lau x-ray interferometry for high energy density plasma diagnostic.” Review of Scientific Instruments 82.11 (2011): 113508-113508.

2010

  1. D. Stutman and M. Finkenthal. Development of novel optics for X‐ray phase‐contrast imaging applications in ICF research, 2010. APS poster.
  2. K. Tritz, D. Stutman, M. Finkenthal, D. Kumar, and D. Clayton, Multi-energy Soft X-ray diagnostic for NSTX, 2010. APS 2010 poster.
  3. D. Kumar et. al. Modeling impurity distribution in an ST using a transmission grating based diagnostic in the EUV range. APS 2010 poster.
  4. D. Stutman, M. Finkenthal and N. Moldovan, Development of microperiodic mirrors for hard x-ray phase-contrast imaging. Applied optics, Vol. 49, Issue 25, pp. 4677-4686 (2010).
  5. D. Stutman, M. Finkenthal, and N. Moldovan. Development of optics for x-ray phase-contrast imaging of high energy density plasmas. Rev. Sci. Instrum. 81, 10E504 (2010). Link
  6. K. Tritz, D. Stutman, L. Delgado-Aparicio, M. Finkenthal, R. Kaita, and L. Roquemore. Prototype high resolution multienergy soft x-ray array for NSTX. Rev. Sci. Instrum. 81, 10E502 (2010).Link
  7. D. Kumar, D. Stutman, K. Tritz, M. Finkenthal, C. Tarrio, and S. Grantham. Transmission grating based extreme ultraviolet imaging spectrometer for time and space resolved impurity measurements. Rev. Sci. Instrum. 81, 10E507 (2010). Link. PDF.
  8. D. Stutman et. al. Development of novel optics for X-ray phase-contrast imaging applications in HEDLP/ICF research, High Temperature Plasma Diagnostics, 2010. HTPD poster.
  9. K. Tritz et. al., Prototype high resolution multi-energy soft X-ray array for NSTX, 2010. HTPD Poster.
  10. D. Kumar et. al. Transmission grating based EUV imaging spectrometer for time and space resolved impurity measurements, 2010. HTPD poster.
  11. D. Kumar et. al. First results from Transmission Grating Imaging Spectrometer. Presented on May 10, 2010 at the NSTX Monday Physics Meeting.

2009

  1. D. Stutman et. al. Develpment of Diffractive XUV-VUV Light extractors for Fusion Plasma Diagnostic, 2009. APS poster.
  2. K. Tritz et. al. Prototype high resolution multi-energy soft X-ray array for NSTX. 2009. APS poster.
  3. Overview of results from the National Spherical Torus Experiment, D.A. Gates and the NSTX team, Nuclear Fusion, 49, 104016, 2009. Link
  4. Correlation between Electron transport and shear Alfven activity in the NSTX plasma, D. Stutman et al., Phys. Rev. Lett., 102, 115002, 2009. Link
  5. Impurity transport studies in neutral beam heated spherical tokamak H-mode plasmas, L. Delgado Aparicio et al., Nuclear Fusion, 49, 085028, 2009. Link

2008

  1. Relationship between Edge Localized Modes (ELMs) severity and electron transport in NSTX, K. Tritz et al., Physics of Plasmas, 15, 056119, 2008. Link
  2. Free-standing diffractive optical elements as light extractors for ‘burning plasma’ experiments, D. Stutman, G. Caravelli, M. Finkenthal and D. White, Journal of Applied Physics, 103, 093307, 2008. Link

2007

  1. Updating of ionization data for ionization balance evaluations of atoms and ions for the elements hydrogen to germanium, M. Mattioli, G. Mazzitelli, M. Finkenthal et al., J. Phys. B:At. Mol. Opt. Phys, 40, 3569, 2007. Link
  2. Multi-functional diagnostic method with tracer-encapsulated pellet injection, D.Stutman, M. Finkenthal, S. Sudo, N. Tamura et al., Plasma and Fusion Research, vol. 2., 1013, 2007. Link
  3. A ’multi-color’ SXR diagnostic for time and space-resolved measurements of electron temperature, MHD activity and particle transport in MCF plasmas, L. Delgado-Aparicio et al., Plasma Physics and Controlled Fusion, 49, 1245, 2007. Link
  4. Overview of recent physics results from the National Spherical Torus Experiment, with J. Menard and the NSTX Team, Nuclear Fusion, 47 (10), 645, 2007. Link
  5. Transport with reversed shear in NSTX, with F. Levinton et al., Physics of Plasmas, 14 (5), 056119, 2007. Link
  6. High-efficiency fast scintillators for ‘optical’ soft-X ray arrays for laboratory plasma diagnostics, L. Delgado-Aparicio et al., Applied Optics, 46, 6069, 2007. Link
  7. Fast electron temperature measurements using a ‘multi-color’ optical array, L. Delgado-Aparicio et al., Journal of Applied Physics, 102, 073304, 2007. Link