Relationship between Ba atom emission and electrode temperature in a low-pressure fluorescent lamp

Yukihiko Yamagata, Makoto Kai, Sho Naito, Kentaro Tomita, Kiichiro Uchino, Yoshio Manabe

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A relationship between emission characteristics of Ba atom as an emitter material and temperature distributions of an electrode in a fluorescent lamp is described, which is measured by using laser-induced fluorescence and black-body radiation method, respectively. In a virgin lamp, a hot spot observed at the electrode edge connected to the power supply is the main source of Ba atom emission. In a long-term-used lamp, it is shown that Ba atom emission, thermionic electron emission in cathode half-cycle and electron collection in anode half-cycle are most active on the hot spot appearing on the center of the electrode.

Original languageEnglish
Pages (from-to)3449-3452
Number of pages4
JournalThin Solid Films
Volume518
Issue number13
DOIs
Publication statusPublished - Apr 30 2010

Fingerprint

Fluorescent lamps
luminaires
low pressure
Electric lamps
Atoms
Electrodes
electrodes
black body radiation
atoms
Thermionic emission
cycles
thermionic emission
Electron emission
power supplies
laser induced fluorescence
Temperature
electron emission
temperature
Anodes
emitters

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Relationship between Ba atom emission and electrode temperature in a low-pressure fluorescent lamp. / Yamagata, Yukihiko; Kai, Makoto; Naito, Sho; Tomita, Kentaro; Uchino, Kiichiro; Manabe, Yoshio.

In: Thin Solid Films, Vol. 518, No. 13, 30.04.2010, p. 3449-3452.

Research output: Contribution to journalArticle

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AU - Uchino, Kiichiro

AU - Manabe, Yoshio

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AB - A relationship between emission characteristics of Ba atom as an emitter material and temperature distributions of an electrode in a fluorescent lamp is described, which is measured by using laser-induced fluorescence and black-body radiation method, respectively. In a virgin lamp, a hot spot observed at the electrode edge connected to the power supply is the main source of Ba atom emission. In a long-term-used lamp, it is shown that Ba atom emission, thermionic electron emission in cathode half-cycle and electron collection in anode half-cycle are most active on the hot spot appearing on the center of the electrode.

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