Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation

T. Muro; T. Nakamura; T. Matsushita; H. Kimura; T. Nakatani; T. Hirono; T. Kudo; K. Kobayashi; Y. Saitoh; M. Takeuchi; T. Hara; K. Shirasawa; H. Kitamura

doi:10.1016/j.elspec.2005.01.140

Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation

T. Muro, T. Nakamura, T. Matsushita, H. Kimura, T. Nakatani, T. Hirono, T. Kudo, K. Kobayashi, Y. Saitoh, M. Takeuchi, T. Hara, K. Shirasawa, H. Kitamura

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

The measurement of circular dichroism (CD) in soft X-ray absorption at BL25SU of SPring-8 has been developed into a phase-sensitive detection using helicity modulation (HM) of circularly polarized light. The HM is performed by the light source, "twin helical undulators". A lock-in amplifier is used for the phase-sensitive detection to extract small CD signals buried in noises. The noise level of a measured magnetic CD has been reduced to less than 1/10 by using this method in comparison with a normal integration measurement.

Original language	English
Pages (from-to)	1101-1103
Number of pages	3
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.140
Publication status	Published - 2005 Jun
Externally published	Yes

Keywords

Circular dichroism
Helical undulator radiation
Helicity modulation
Soft X-ray absorption

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Radiation
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry

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10.1016/j.elspec.2005.01.140

Cite this

Muro, T., Nakamura, T., Matsushita, T., Kimura, H., Nakatani, T., Hirono, T., Kudo, T., Kobayashi, K., Saitoh, Y., Takeuchi, M., Hara, T., Shirasawa, K., & Kitamura, H. (2005). Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation. Journal of Electron Spectroscopy and Related Phenomena, 144-147, 1101-1103. https://doi.org/10.1016/j.elspec.2005.01.140

Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation. / Muro, T.; Nakamura, T.; Matsushita, T.; Kimura, H.; Nakatani, T.; Hirono, T.; Kudo, T.; Kobayashi, K.; Saitoh, Y.; Takeuchi, M.; Hara, T.; Shirasawa, K.; Kitamura, H.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 144-147, 06.2005, p. 1101-1103.

Research output: Contribution to journal › Article › peer-review

Muro, T, Nakamura, T, Matsushita, T, Kimura, H, Nakatani, T, Hirono, T, Kudo, T, Kobayashi, K, Saitoh, Y, Takeuchi, M, Hara, T, Shirasawa, K & Kitamura, H 2005, 'Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation', Journal of Electron Spectroscopy and Related Phenomena, vol. 144-147, pp. 1101-1103. https://doi.org/10.1016/j.elspec.2005.01.140

Muro, T. ; Nakamura, T. ; Matsushita, T. ; Kimura, H. ; Nakatani, T. ; Hirono, T. ; Kudo, T. ; Kobayashi, K. ; Saitoh, Y. ; Takeuchi, M. ; Hara, T. ; Shirasawa, K. ; Kitamura, H. / Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation. In: Journal of Electron Spectroscopy and Related Phenomena. 2005 ; Vol. 144-147. pp. 1101-1103.

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title = "Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation",

abstract = "The measurement of circular dichroism (CD) in soft X-ray absorption at BL25SU of SPring-8 has been developed into a phase-sensitive detection using helicity modulation (HM) of circularly polarized light. The HM is performed by the light source, {"}twin helical undulators{"}. A lock-in amplifier is used for the phase-sensitive detection to extract small CD signals buried in noises. The noise level of a measured magnetic CD has been reduced to less than 1/10 by using this method in comparison with a normal integration measurement.",

keywords = "Circular dichroism, Helical undulator radiation, Helicity modulation, Soft X-ray absorption",

author = "T. Muro and T. Nakamura and T. Matsushita and H. Kimura and T. Nakatani and T. Hirono and T. Kudo and K. Kobayashi and Y. Saitoh and M. Takeuchi and T. Hara and K. Shirasawa and H. Kitamura",

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doi = "10.1016/j.elspec.2005.01.140",

language = "English",

volume = "144-147",

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T1 - Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation

AU - Muro, T.

AU - Nakamura, T.

AU - Matsushita, T.

AU - Kimura, H.

AU - Nakatani, T.

AU - Hirono, T.

AU - Kudo, T.

AU - Kobayashi, K.

AU - Saitoh, Y.

AU - Takeuchi, M.

AU - Hara, T.

AU - Shirasawa, K.

AU - Kitamura, H.

PY - 2005/6

Y1 - 2005/6

N2 - The measurement of circular dichroism (CD) in soft X-ray absorption at BL25SU of SPring-8 has been developed into a phase-sensitive detection using helicity modulation (HM) of circularly polarized light. The HM is performed by the light source, "twin helical undulators". A lock-in amplifier is used for the phase-sensitive detection to extract small CD signals buried in noises. The noise level of a measured magnetic CD has been reduced to less than 1/10 by using this method in comparison with a normal integration measurement.

AB - The measurement of circular dichroism (CD) in soft X-ray absorption at BL25SU of SPring-8 has been developed into a phase-sensitive detection using helicity modulation (HM) of circularly polarized light. The HM is performed by the light source, "twin helical undulators". A lock-in amplifier is used for the phase-sensitive detection to extract small CD signals buried in noises. The noise level of a measured magnetic CD has been reduced to less than 1/10 by using this method in comparison with a normal integration measurement.

KW - Circular dichroism

KW - Helical undulator radiation

KW - Helicity modulation

KW - Soft X-ray absorption

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JF - Journal of Electron Spectroscopy and Related Phenomena

SN - 0368-2048

ER -

Circular dichroism measurement of soft X-ray absorption using helicity modulation of helical undulator radiation

Abstract

Keywords

ASJC Scopus subject areas

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