Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers
The longitudinal relaxation time T1 of Xe nuclear spins is an important parameter to determine the performance of Rb–Xe comagnetometers. The industry standard delayed pulse method is time-consuming, and requires multiple π pulses and π/2 pulses. In this work, a direct measurement method for obtainin...
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| Format: | Article |
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Elsevier
2023-12-01
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| Series: | Results in Physics |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379723009427 |
| _version_ | 1827616133947064320 |
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| author | Yunkai Mao Jinpeng Peng Jianli Li Zhanchao Liu Haoying Pang Wenfeng Fan Tengyue Wang |
| author_facet | Yunkai Mao Jinpeng Peng Jianli Li Zhanchao Liu Haoying Pang Wenfeng Fan Tengyue Wang |
| author_sort | Yunkai Mao |
| collection | DOAJ |
| description | The longitudinal relaxation time T1 of Xe nuclear spins is an important parameter to determine the performance of Rb–Xe comagnetometers. The industry standard delayed pulse method is time-consuming, and requires multiple π pulses and π/2 pulses. In this work, a direct measurement method for obtaining T1 based on the in-situ longitudinal magnetometer is introduced with the measurement period shortened to 3-5 T1. The proposed method requires only a single π pulse, reducing the measurement time by approximately more than 90%. By solving the Bloch equation, the working principle of the longitudinal magnetometer and the measurement method is demonstrated. The experiment shows that the longitudinal magnetometer achieves a linear working range greater than 60 nT, and the difference in measurement results of T1 through different methods at different temperatures and pump beam power is less than 3%. In addition, the longitudinal magnetometer introduced in this method has broad prospects for measuring the basic physical quantities in comagnetometers. |
| first_indexed | 2024-03-09T09:21:49Z |
| format | Article |
| id | doaj.art-1652b667a92346b7a2acc8fc02e03677 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-03-09T09:21:49Z |
| publishDate | 2023-12-01 |
| publisher | Elsevier |
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| series | Results in Physics |
| spelling | doaj.art-1652b667a92346b7a2acc8fc02e036772023-12-02T06:59:33ZengElsevierResults in Physics2211-37972023-12-0155107149Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometersYunkai Mao0Jinpeng Peng1Jianli Li2Zhanchao Liu3Haoying Pang4Wenfeng Fan5Tengyue Wang6School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China; Hangzhou Innovation Institute of Beihang University, Hangzhou 310051, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China; Hangzhou Innovation Institute of Beihang University, Hangzhou 310051, China; Corresponding author at: School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China.School of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China; Hangzhou Innovation Institute of Beihang University, Hangzhou 310051, China; Hangzhou Institute of National Extremely-weak Magnetic Field Infrastructure, Hangzhou 310051, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, China; Hangzhou Innovation Institute of Beihang University, Hangzhou 310051, China; Hangzhou Institute of National Extremely-weak Magnetic Field Infrastructure, Hangzhou 310051, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaSchool of Instrumentation and Optoelectronic Engineering, Beihang University, Beijing 100191, ChinaThe longitudinal relaxation time T1 of Xe nuclear spins is an important parameter to determine the performance of Rb–Xe comagnetometers. The industry standard delayed pulse method is time-consuming, and requires multiple π pulses and π/2 pulses. In this work, a direct measurement method for obtaining T1 based on the in-situ longitudinal magnetometer is introduced with the measurement period shortened to 3-5 T1. The proposed method requires only a single π pulse, reducing the measurement time by approximately more than 90%. By solving the Bloch equation, the working principle of the longitudinal magnetometer and the measurement method is demonstrated. The experiment shows that the longitudinal magnetometer achieves a linear working range greater than 60 nT, and the difference in measurement results of T1 through different methods at different temperatures and pump beam power is less than 3%. In addition, the longitudinal magnetometer introduced in this method has broad prospects for measuring the basic physical quantities in comagnetometers.http://www.sciencedirect.com/science/article/pii/S2211379723009427Rb–Xe comagnetometerLongitudinal relaxation timeLongitudinal magnetometerDynamic responseOptical pumping spin-exchange |
| spellingShingle | Yunkai Mao Jinpeng Peng Jianli Li Zhanchao Liu Haoying Pang Wenfeng Fan Tengyue Wang Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers Results in Physics Rb–Xe comagnetometer Longitudinal relaxation time Longitudinal magnetometer Dynamic response Optical pumping spin-exchange |
| title | Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers |
| title_full | Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers |
| title_fullStr | Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers |
| title_full_unstemmed | Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers |
| title_short | Rapid measurement of longitudinal nuclear spin relaxation time based on the in-situ longitudinal magnetometer in Rb–Xe comagnetometers |
| title_sort | rapid measurement of longitudinal nuclear spin relaxation time based on the in situ longitudinal magnetometer in rb xe comagnetometers |
| topic | Rb–Xe comagnetometer Longitudinal relaxation time Longitudinal magnetometer Dynamic response Optical pumping spin-exchange |
| url | http://www.sciencedirect.com/science/article/pii/S2211379723009427 |
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