Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies

Akinori Saeki; Takahiro Kozawa; Shigeru Kashiwagi; Kazumasa Okamoto; Goro Isoyama; Yoichi Yoshida; Seiichi Tagawa

doi:10.1016/j.nima.2005.03.123

Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies

Akinori Saeki, Takahiro Kozawa, Shigeru Kashiwagi, Kazumasa Okamoto, Goro Isoyama, Yoichi Yoshida, Seiichi Tagawa

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

26 Citations (Scopus)

Abstract

A picosecond stroboscopic pulse radiolysis system which consists of a femtosecond laser and a picosecond L-band linear accelerator (linac) is demonstrated. A newly installed femtosecond laser system operated at 960 Hz can cover a wide region of wavelength ranging from <300 nm to 10 μm, although the upper limit is 1.7 μm to date because of the sensitivity of photodetectors. In order to achieve a high accuracy of synchronization between the laser and the linac, a new timing and synchronization circuit was developed. A double pulse detection method was applied for the new system, resulting in doubling of the improvement in signal-to-noise ratio. The time resolution and time jitter were estimated from the rise time of hydrated electrons at 600 nm, and the transient absorption kinetics of electrons in n-dodecane was measured at 1300 nm.

Original language	English
Pages (from-to)	627-633
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	546
Issue number	3
DOIs	https://doi.org/10.1016/j.nima.2005.03.123
Publication status	Published - 2005 Jul 11
Externally published	Yes

Keywords

Femtosecond laser
Linear accelerator
Radiation chemistry
Stroboscopic pulse radiolysis
Synchronization
Transient absorption spectroscopy in infrared

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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Saeki, A., Kozawa, T., Kashiwagi, S., Okamoto, K., Isoyama, G., Yoshida, Y., & Tagawa, S. (2005). Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 546(3), 627-633. https://doi.org/10.1016/j.nima.2005.03.123

Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies. / Saeki, Akinori; Kozawa, Takahiro; Kashiwagi, Shigeru; Okamoto, Kazumasa; Isoyama, Goro; Yoshida, Yoichi; Tagawa, Seiichi.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 546, No. 3, 11.07.2005, p. 627-633.

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

Saeki, A, Kozawa, T, Kashiwagi, S, Okamoto, K, Isoyama, G, Yoshida, Y & Tagawa, S 2005, 'Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 546, no. 3, pp. 627-633. https://doi.org/10.1016/j.nima.2005.03.123

Saeki, Akinori ; Kozawa, Takahiro ; Kashiwagi, Shigeru ; Okamoto, Kazumasa ; Isoyama, Goro ; Yoshida, Yoichi ; Tagawa, Seiichi. / Synchronization of femtosecond UV-IR laser with electron beam for pulse radiolysis studies. In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2005 ; Vol. 546, No. 3. pp. 627-633.

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abstract = "A picosecond stroboscopic pulse radiolysis system which consists of a femtosecond laser and a picosecond L-band linear accelerator (linac) is demonstrated. A newly installed femtosecond laser system operated at 960 Hz can cover a wide region of wavelength ranging from <300 nm to 10 μm, although the upper limit is 1.7 μm to date because of the sensitivity of photodetectors. In order to achieve a high accuracy of synchronization between the laser and the linac, a new timing and synchronization circuit was developed. A double pulse detection method was applied for the new system, resulting in doubling of the improvement in signal-to-noise ratio. The time resolution and time jitter were estimated from the rise time of hydrated electrons at 600 nm, and the transient absorption kinetics of electrons in n-dodecane was measured at 1300 nm.",

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author = "Akinori Saeki and Takahiro Kozawa and Shigeru Kashiwagi and Kazumasa Okamoto and Goro Isoyama and Yoichi Yoshida and Seiichi Tagawa",

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AU - Isoyama, Goro

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AB - A picosecond stroboscopic pulse radiolysis system which consists of a femtosecond laser and a picosecond L-band linear accelerator (linac) is demonstrated. A newly installed femtosecond laser system operated at 960 Hz can cover a wide region of wavelength ranging from <300 nm to 10 μm, although the upper limit is 1.7 μm to date because of the sensitivity of photodetectors. In order to achieve a high accuracy of synchronization between the laser and the linac, a new timing and synchronization circuit was developed. A double pulse detection method was applied for the new system, resulting in doubling of the improvement in signal-to-noise ratio. The time resolution and time jitter were estimated from the rise time of hydrated electrons at 600 nm, and the transient absorption kinetics of electrons in n-dodecane was measured at 1300 nm.

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KW - Linear accelerator

KW - Radiation chemistry

KW - Stroboscopic pulse radiolysis

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