Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy

W.W. Stoffels; A.J. Flikweert; T. Nimalasuriya; C.H.J.M. Groothuis; M. Haverlag; G.M.W. Kroesen

Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy

W.W. Stoffels, A.J. Flikweert, T. Nimalasuriya, C.H.J.M. Groothuis, M. Haverlag, G.M.W. Kroesen

Elementary Processes in Gas Discharges

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

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Abstract

HID lamps containing rare earth additives (in our case dysprosium) show color separation because of axial segregation, caused by diffusion and convection. Two-dimensional atomic Dy density profiles are measured by means of laser absorption spectroscopy. The radially resolved atomic density measurements show a hollow density profile. In the outer parts of the lamp molecules dominate, while the center is depleted of Dy atoms due to ionization. From the profiles the axial segregation parameter is determined.

Original language	English
Title of host publication	Proceedings of the 27th International Conference on Phenomena in Ionised Gases (XXVII ICPIG 2005) 17-22 July 2005, Eindhoven, the Netherlands
Pages	p16-344
Publication status	Published - 2005

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Stoffels, W. W., Flikweert, A. J., Nimalasuriya, T., Groothuis, C. H. J. M., Haverlag, M., & Kroesen, G. M. W. (2005). Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy. In Proceedings of the 27th International Conference on Phenomena in Ionised Gases (XXVII ICPIG 2005) 17-22 July 2005, Eindhoven, the Netherlands (pp. p16-344)

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title = "Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy",

abstract = "HID lamps containing rare earth additives (in our case dysprosium) show color separation because of axial segregation, caused by diffusion and convection. Two-dimensional atomic Dy density profiles are measured by means of laser absorption spectroscopy. The radially resolved atomic density measurements show a hollow density profile. In the outer parts of the lamp molecules dominate, while the center is depleted of Dy atoms due to ionization. From the profiles the axial segregation parameter is determined.",

author = "W.W. Stoffels and A.J. Flikweert and T. Nimalasuriya and C.H.J.M. Groothuis and M. Haverlag and G.M.W. Kroesen",

year = "2005",

language = "English",

pages = "p16--344",

booktitle = "Proceedings of the 27th International Conference on Phenomena in Ionised Gases (XXVII ICPIG 2005) 17-22 July 2005, Eindhoven, the Netherlands",

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Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy. / Stoffels, W.W.; Flikweert, A.J.; Nimalasuriya, T. et al.
Proceedings of the 27th International Conference on Phenomena in Ionised Gases (XXVII ICPIG 2005) 17-22 July 2005, Eindhoven, the Netherlands. 2005. p. p16-344.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

TY - GEN

T1 - Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy

AU - Stoffels, W.W.

AU - Flikweert, A.J.

AU - Nimalasuriya, T.

AU - Groothuis, C.H.J.M.

AU - Haverlag, M.

AU - Kroesen, G.M.W.

PY - 2005

Y1 - 2005

N2 - HID lamps containing rare earth additives (in our case dysprosium) show color separation because of axial segregation, caused by diffusion and convection. Two-dimensional atomic Dy density profiles are measured by means of laser absorption spectroscopy. The radially resolved atomic density measurements show a hollow density profile. In the outer parts of the lamp molecules dominate, while the center is depleted of Dy atoms due to ionization. From the profiles the axial segregation parameter is determined.

AB - HID lamps containing rare earth additives (in our case dysprosium) show color separation because of axial segregation, caused by diffusion and convection. Two-dimensional atomic Dy density profiles are measured by means of laser absorption spectroscopy. The radially resolved atomic density measurements show a hollow density profile. In the outer parts of the lamp molecules dominate, while the center is depleted of Dy atoms due to ionization. From the profiles the axial segregation parameter is determined.

M3 - Conference contribution

SP - p16-344

BT - Proceedings of the 27th International Conference on Phenomena in Ionised Gases (XXVII ICPIG 2005) 17-22 July 2005, Eindhoven, the Netherlands

ER -

Axial segregation in high intensity discharge lamps measured by laser absorption spectroscopy

Abstract

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