JP2018155518A - 電子スピン共鳴装置 - Google Patents
電子スピン共鳴装置 Download PDFInfo
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- JP2018155518A JP2018155518A JP2017050576A JP2017050576A JP2018155518A JP 2018155518 A JP2018155518 A JP 2018155518A JP 2017050576 A JP2017050576 A JP 2017050576A JP 2017050576 A JP2017050576 A JP 2017050576A JP 2018155518 A JP2018155518 A JP 2018155518A
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- 238000004435 EPR spectroscopy Methods 0.000 title claims abstract description 92
- 230000010355 oscillation Effects 0.000 claims description 26
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- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 238000001362 electron spin resonance spectrum Methods 0.000 description 6
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- 238000001826 continuous-wave electron spin resonance spectroscopy Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
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Abstract
Description
10 制御部
11a〜11h DAC
12 USB−IOポート
20 高周波出力部
21 発振器
22 第1分周器
23 第2分周器
24 減衰器
25 位相器
30 高周波取得部
31、80 LNA
32 BPF
33 ADC
40 共振部
41 共振器
50 整合同調回路
51〜53 バラクタダイオード
54a、54b 抵抗
55a、55b コンデンサ
56a〜56c インダクタ
60 磁気回路部
61 変調コイル
61a 増幅器
62 勾配コイル
62a 勾配磁場制御部
63 掃引コイル
63a 磁場掃引制御部
70 サーキュレータ
90 PC
100 FPGA
101、108 DDC部
102、106 ダウンサンプリング部
103 位相器
104 FIRLPF
105 加算減算器
107 FIRBPF
110 積分器
111、113 減衰器
112 NCO
Claims (4)
- 整合同調回路と共振器とを有する共振部と、
発振器を有し、前記発振器の発振周波数に基づく高周波を前記共振器に出力する高周波出力部と、
前記共振器で反射された前記高周波の反射波の強度情報と位相情報とを有するI(In−phase)信号及びQ(Quadrature−phase)信号をそれぞれ前記共振部に負帰還する制御部と、を備え、
前記整合同調回路は、前記I信号及び前記Q信号の一方に基づいて前記共振部のインピーダンスを調整し、前記I信号及び前記Q信号の他方に基づいて前記共振器の共振周波数を前記高周波の周波数に同調する、
電子スピン共鳴装置。 - 前記電子スピン共鳴装置は、さらに、前記反射波の位相を前記共振器に入射する高周波の位相に対して略45度又は略225度に調整する位相器を備える、
請求項1に記載の電子スピン共鳴装置。 - 前記電子スピン共鳴装置は、さらに、
前記反射波をフィルタリングするバンドパスフィルタと、
フィルタリングされた反射波をデジタル変換するADコンバータと、を備え、
前記高周波出力部は、さらに、
前記発振器の発振周波数をm(mは奇数)×n(nは整数)で分周する第1分周器と、
前記発振器の発振周波数を4×nで分周する第2分周器と、を有し、
前記発振器の発振周波数に基づく高周波として、前記第2分周器で分周された周波数の高周波信号を前記共振器に出力し、
前記ADコンバータは、前記第1分周器で分周された周波数をサンプリング周波数として、前記フィルタリングされた反射波をデジタル変換する、
請求項1又は2に記載の電子スピン共鳴装置。 - 前記制御部は、FPGA(Field Programmable Gate Array)により構成される、
請求項1〜3のいずれか1項に記載の電子スピン共鳴装置。
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JP2018155518A true JP2018155518A (ja) | 2018-10-04 |
JP6815637B2 JP6815637B2 (ja) | 2021-01-20 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5397988A (en) * | 1991-08-02 | 1995-03-14 | Bruker Analytische Messtechnik Gmbh | Method and device for tuning a HF source, in particular for tuning a microwave source of an electron spin resonance spectrometer |
JP2000065769A (ja) * | 1998-08-19 | 2000-03-03 | Japan Science & Technology Corp | 共振器及び電子スピン共鳴測定装置 |
JP2007010331A (ja) * | 2005-06-28 | 2007-01-18 | Yamagata Univ | 電子スピン共鳴測定装置の自動制御装置 |
JP2008003029A (ja) * | 2006-06-26 | 2008-01-10 | Jeol Ltd | Esr装置 |
JP2008180510A (ja) * | 2007-01-23 | 2008-08-07 | Yamagata Univ | 共振器及び電子スピン共鳴分光装置 |
JP2014138699A (ja) * | 2012-12-18 | 2014-07-31 | Toshiba Corp | 磁気共鳴イメージング装置 |
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2017
- 2017-03-15 JP JP2017050576A patent/JP6815637B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5397988A (en) * | 1991-08-02 | 1995-03-14 | Bruker Analytische Messtechnik Gmbh | Method and device for tuning a HF source, in particular for tuning a microwave source of an electron spin resonance spectrometer |
JP2000065769A (ja) * | 1998-08-19 | 2000-03-03 | Japan Science & Technology Corp | 共振器及び電子スピン共鳴測定装置 |
JP2007010331A (ja) * | 2005-06-28 | 2007-01-18 | Yamagata Univ | 電子スピン共鳴測定装置の自動制御装置 |
JP2008003029A (ja) * | 2006-06-26 | 2008-01-10 | Jeol Ltd | Esr装置 |
JP2008180510A (ja) * | 2007-01-23 | 2008-08-07 | Yamagata Univ | 共振器及び電子スピン共鳴分光装置 |
JP2014138699A (ja) * | 2012-12-18 | 2014-07-31 | Toshiba Corp | 磁気共鳴イメージング装置 |
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