Direct observations of pure electron outflow in magnetic reconnection

K. Sakai; T. Moritaka; T. Morita; K. Tomita; T. Minami; T. Nishimoto; S. Egashira; M. Ota; Y. Sakawa; N. Ozaki; R. Kodama; T. Kojima; T. Takezaki; R. Yamazaki; S. J. Tanaka; K. Aihara; M. Koenig; B. Albertazzi; P. Mabey; N. Woolsey; S. Matsukiyo; H. Takabe; M. Hoshino; Y. Kuramitsu

doi:10.1038/s41598-022-14582-3

Direct observations of pure electron outflow in magnetic reconnection

K. Sakai^*, T. Moritaka, T. Morita, K. Tomita, T. Minami, T. Nishimoto, S. Egashira, M. Ota, Y. Sakawa, N. Ozaki, R. Kodama, T. Kojima, T. Takezaki, R. Yamazaki, S. J. Tanaka, K. Aihara, M. Koenig, B. Albertazzi, P. Mabey, N. WoolseyS. Matsukiyo, H. Takabe, M. Hoshino, Y. Kuramitsu

^*Corresponding author for this work

Physics

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

Abstract

Magnetic reconnection is a universal process in space, astrophysical, and laboratory plasmas. It alters magnetic field topology and results in energy release to the plasma. Here we report the experimental results of a pure electron outflow in magnetic reconnection, which is not accompanied with ion flows. By controlling an applied magnetic field in a laser produced plasma, we have constructed an experiment that magnetizes the electrons but not the ions. This allows us to isolate the electron dynamics from the ions. Collective Thomson scattering measurements reveal the electron Alfvénic outflow without ion outflow. The resultant plasmoid and whistler waves are observed with the magnetic induction probe measurements. We observe the unique features of electron-scale magnetic reconnection simultaneously in laser produced plasmas, including global structures, local plasma parameters, magnetic field, and waves.

Original language	English
Article number	10921
Number of pages	9
Journal	Scientific reports
Volume	12
Issue number	1
Early online date	30 Jun 2022
DOIs	https://doi.org/10.1038/s41598-022-14582-3
Publication status	Published - Dec 2022

Bibliographical note

© The Author(s) 2022

Funding Information:
The authors would like to acknowledge the dedicated technical support by the staff at ILE for the laser operation, target fabrication, and plasma diagnostics. This work was supported by JSPS KAKENHI Grant Numbers JP19K21865, JPJSBP120203206, JP20KK0064, JP21J20499, JP22H01195, JP18H01232, JP22H01251, JPJSCCA2019002, and JPJSCCB20190003. This work was the result of using research equipment shared in MEXT Project for promoting public utilization of advanced research infrastructure (Program for advanced research equipment platforms) Grant Number JPMXS0450300121.

Funding Information:
The authors would like to acknowledge the dedicated technical support by the staff at ILE for the laser operation, target fabrication, and plasma diagnostics. This work was supported by JSPS KAKENHI Grant Numbers JP19K21865, JPJSBP120203206, JP20KK0064, JP21J20499, JP22H01195, JP18H01232, JP22H01251, JPJSCCA2019002, and JPJSCCB20190003. This work was the result of using research equipment shared in MEXT Project for promoting public utilization of advanced research infrastructure (Program for advanced research equipment platforms) Grant Number JPMXS0450300121.

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s41598-022-14582-3
© The Author(s) 2022
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Sakai, K., Moritaka, T., Morita, T., Tomita, K., Minami, T., Nishimoto, T., Egashira, S., Ota, M., Sakawa, Y., Ozaki, N., Kodama, R., Kojima, T., Takezaki, T., Yamazaki, R., Tanaka, S. J., Aihara, K., Koenig, M., Albertazzi, B., Mabey, P., ... Kuramitsu, Y. (2022). Direct observations of pure electron outflow in magnetic reconnection. Scientific reports, 12(1), Article 10921. https://doi.org/10.1038/s41598-022-14582-3

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title = "Direct observations of pure electron outflow in magnetic reconnection",

abstract = "Magnetic reconnection is a universal process in space, astrophysical, and laboratory plasmas. It alters magnetic field topology and results in energy release to the plasma. Here we report the experimental results of a pure electron outflow in magnetic reconnection, which is not accompanied with ion flows. By controlling an applied magnetic field in a laser produced plasma, we have constructed an experiment that magnetizes the electrons but not the ions. This allows us to isolate the electron dynamics from the ions. Collective Thomson scattering measurements reveal the electron Alfv{\'e}nic outflow without ion outflow. The resultant plasmoid and whistler waves are observed with the magnetic induction probe measurements. We observe the unique features of electron-scale magnetic reconnection simultaneously in laser produced plasmas, including global structures, local plasma parameters, magnetic field, and waves.",

author = "K. Sakai and T. Moritaka and T. Morita and K. Tomita and T. Minami and T. Nishimoto and S. Egashira and M. Ota and Y. Sakawa and N. Ozaki and R. Kodama and T. Kojima and T. Takezaki and R. Yamazaki and Tanaka, {S. J.} and K. Aihara and M. Koenig and B. Albertazzi and P. Mabey and N. Woolsey and S. Matsukiyo and H. Takabe and M. Hoshino and Y. Kuramitsu",

note = "{\textcopyright} The Author(s) 2022 Funding Information: The authors would like to acknowledge the dedicated technical support by the staff at ILE for the laser operation, target fabrication, and plasma diagnostics. This work was supported by JSPS KAKENHI Grant Numbers JP19K21865, JPJSBP120203206, JP20KK0064, JP21J20499, JP22H01195, JP18H01232, JP22H01251, JPJSCCA2019002, and JPJSCCB20190003. This work was the result of using research equipment shared in MEXT Project for promoting public utilization of advanced research infrastructure (Program for advanced research equipment platforms) Grant Number JPMXS0450300121. Funding Information: The authors would like to acknowledge the dedicated technical support by the staff at ILE for the laser operation, target fabrication, and plasma diagnostics. This work was supported by JSPS KAKENHI Grant Numbers JP19K21865, JPJSBP120203206, JP20KK0064, JP21J20499, JP22H01195, JP18H01232, JP22H01251, JPJSCCA2019002, and JPJSCCB20190003. This work was the result of using research equipment shared in MEXT Project for promoting public utilization of advanced research infrastructure (Program for advanced research equipment platforms) Grant Number JPMXS0450300121. ",

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doi = "10.1038/s41598-022-14582-3",

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Sakai, K, Moritaka, T, Morita, T, Tomita, K, Minami, T, Nishimoto, T, Egashira, S, Ota, M, Sakawa, Y, Ozaki, N, Kodama, R, Kojima, T, Takezaki, T, Yamazaki, R, Tanaka, SJ, Aihara, K, Koenig, M, Albertazzi, B, Mabey, P, Woolsey, N, Matsukiyo, S, Takabe, H, Hoshino, M & Kuramitsu, Y 2022, 'Direct observations of pure electron outflow in magnetic reconnection', Scientific reports, vol. 12, no. 1, 10921. https://doi.org/10.1038/s41598-022-14582-3

TY - JOUR

T1 - Direct observations of pure electron outflow in magnetic reconnection

AU - Sakai, K.

AU - Moritaka, T.

AU - Morita, T.

AU - Tomita, K.

AU - Minami, T.

AU - Nishimoto, T.

AU - Egashira, S.

AU - Ota, M.

AU - Sakawa, Y.

AU - Ozaki, N.

AU - Kodama, R.

AU - Kojima, T.

AU - Takezaki, T.

AU - Yamazaki, R.

AU - Tanaka, S. J.

AU - Aihara, K.

AU - Koenig, M.

AU - Albertazzi, B.

AU - Mabey, P.

AU - Woolsey, N.

AU - Matsukiyo, S.

AU - Takabe, H.

AU - Hoshino, M.

AU - Kuramitsu, Y.

N1 - © The Author(s) 2022 Funding Information: The authors would like to acknowledge the dedicated technical support by the staff at ILE for the laser operation, target fabrication, and plasma diagnostics. This work was supported by JSPS KAKENHI Grant Numbers JP19K21865, JPJSBP120203206, JP20KK0064, JP21J20499, JP22H01195, JP18H01232, JP22H01251, JPJSCCA2019002, and JPJSCCB20190003. This work was the result of using research equipment shared in MEXT Project for promoting public utilization of advanced research infrastructure (Program for advanced research equipment platforms) Grant Number JPMXS0450300121. Funding Information: The authors would like to acknowledge the dedicated technical support by the staff at ILE for the laser operation, target fabrication, and plasma diagnostics. This work was supported by JSPS KAKENHI Grant Numbers JP19K21865, JPJSBP120203206, JP20KK0064, JP21J20499, JP22H01195, JP18H01232, JP22H01251, JPJSCCA2019002, and JPJSCCB20190003. This work was the result of using research equipment shared in MEXT Project for promoting public utilization of advanced research infrastructure (Program for advanced research equipment platforms) Grant Number JPMXS0450300121.

PY - 2022/12

Y1 - 2022/12

N2 - Magnetic reconnection is a universal process in space, astrophysical, and laboratory plasmas. It alters magnetic field topology and results in energy release to the plasma. Here we report the experimental results of a pure electron outflow in magnetic reconnection, which is not accompanied with ion flows. By controlling an applied magnetic field in a laser produced plasma, we have constructed an experiment that magnetizes the electrons but not the ions. This allows us to isolate the electron dynamics from the ions. Collective Thomson scattering measurements reveal the electron Alfvénic outflow without ion outflow. The resultant plasmoid and whistler waves are observed with the magnetic induction probe measurements. We observe the unique features of electron-scale magnetic reconnection simultaneously in laser produced plasmas, including global structures, local plasma parameters, magnetic field, and waves.

AB - Magnetic reconnection is a universal process in space, astrophysical, and laboratory plasmas. It alters magnetic field topology and results in energy release to the plasma. Here we report the experimental results of a pure electron outflow in magnetic reconnection, which is not accompanied with ion flows. By controlling an applied magnetic field in a laser produced plasma, we have constructed an experiment that magnetizes the electrons but not the ions. This allows us to isolate the electron dynamics from the ions. Collective Thomson scattering measurements reveal the electron Alfvénic outflow without ion outflow. The resultant plasmoid and whistler waves are observed with the magnetic induction probe measurements. We observe the unique features of electron-scale magnetic reconnection simultaneously in laser produced plasmas, including global structures, local plasma parameters, magnetic field, and waves.

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U2 - 10.1038/s41598-022-14582-3

DO - 10.1038/s41598-022-14582-3

M3 - Article

AN - SCOPUS:85133121446

SN - 2045-2322

VL - 12

JO - Scientific reports

JF - Scientific reports

IS - 1

M1 - 10921

ER -

Direct observations of pure electron outflow in magnetic reconnection

Abstract

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