Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium

H. Iijima; T. Asonuma; T. Hirose; M. Irako; K. Kadoya; T. Kumita; B. Matsumoto; K. Wada; M. Washio

doi:10.1016/S0168-9002(01)01948-9

Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium

H. Iijima^*, T. Asonuma, T. Hirose, M. Irako, K. Kadoya, T. Kumita, B. Matsumoto, K. Wada, M. Washio

^*Corresponding author for this work

School of Advanced Science and Engineering

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

4 Citations (Scopus)

Abstract

On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τ_o-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τ_o-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.

Original language	English
Pages (from-to)	641-648
Number of pages	8
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	483
Issue number	3
DOIs	https://doi.org/10.1016/S0168-9002(01)01948-9
Publication status	Published - 2002 May 11

Keywords

Buncher
Lifetime measure
Ortho-positronium
Slow positron beam

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/S0168-9002(01)01948-9

Cite this

Iijima, H., Asonuma, T., Hirose, T., Irako, M., Kadoya, K., Kumita, T., Matsumoto, B., Wada, K., & Washio, M. (2002). Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 483(3), 641-648. https://doi.org/10.1016/S0168-9002(01)01948-9

Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium. / Iijima, H.; Asonuma, T.; Hirose, T. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 483, No. 3, 11.05.2002, p. 641-648.

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

Iijima, H, Asonuma, T, Hirose, T, Irako, M, Kadoya, K, Kumita, T, Matsumoto, B, Wada, K & Washio, M 2002, 'Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 483, no. 3, pp. 641-648. https://doi.org/10.1016/S0168-9002(01)01948-9

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title = "Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium",

abstract = "On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τo-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τo-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.",

keywords = "Buncher, Lifetime measure, Ortho-positronium, Slow positron beam",

author = "H. Iijima and T. Asonuma and T. Hirose and M. Irako and K. Kadoya and T. Kumita and B. Matsumoto and K. Wada and M. Washio",

note = "Funding Information: This research is partially supported by a Grant-in-Aid for Scientific Research 09304034, 10354004, 10740126 from the Ministry of Education, Science, Sports and Culture of Japan. The authors thank Prof. M. Katada and S. Morisaki for their kind cooperation in the course of the construction of the positron beam line. H. Iijima acknowledges the support of Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.",

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doi = "10.1016/S0168-9002(01)01948-9",

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T1 - Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium

AU - Iijima, H.

AU - Asonuma, T.

AU - Hirose, T.

AU - Irako, M.

AU - Kadoya, K.

AU - Kumita, T.

AU - Matsumoto, B.

AU - Wada, K.

AU - Washio, M.

N1 - Funding Information: This research is partially supported by a Grant-in-Aid for Scientific Research 09304034, 10354004, 10740126 from the Ministry of Education, Science, Sports and Culture of Japan. The authors thank Prof. M. Katada and S. Morisaki for their kind cooperation in the course of the construction of the positron beam line. H. Iijima acknowledges the support of Research Fellowships of the Japan Society for the Promotion of Science for Young Scientists.

PY - 2002/5/11

Y1 - 2002/5/11

N2 - On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τo-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τo-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.

AB - On the basis of velocity modulation, we have developed a positron-beam buncher for the measurement of ortho-positronium lifetime τo-Ps and TOF. Since high permeability cores were used, the buncher was constructed compactly and was used to efficiently produce a bunched beam with a bunch width of 2.2 ns (FWHM) and a repetition period of 960 ns. We have measured the lifetime of ortho-positronium using the buncher and obtained τo-Ps = 127 ns. In this paper, we report on the technical details and performance of the buncher.

KW - Buncher

KW - Lifetime measure

KW - Ortho-positronium

KW - Slow positron beam

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ER -

Time bunching of slow positrons for lifetime and time-of-flight measurements of ortho-positronium

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