Frequency Tunable sub-THz Gyrotron for Direct Measurements of Positronium Hyperfine Structure

被引：33

作者：

Fedotov, A. E. ^{[1
,2
]}

Rozental, R. M. ^{[1
]}

Zotova, I. V. ^{[1
,2
]}

Ginzburg, N. S. ^{[1
]}

Sergeev, A. S. ^{[1
]}

Tarakanov, V. P. ^{[3
,4
]}

Glyavin, M. Yu. ^{[1
]}

Idehara, T. ^{[1
,2
]}

机构：

[1] Russian Acad Sci, Inst Appl Phys, Nizhnii Novgorod, Russia

[2] Univ Fukui FIR UF, Res Ctr Dev Far Infrared Reg, Fukui 9108507, Japan

[3] Moscow Engn Phys Inst, Moscow 115409, Russia

[4] Russian Acad Sci, Joint Inst High Temp, Moscow 119991, Russia

来源：

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2018年 / 39卷 / 10期

基金：

俄罗斯科学基金会;

关键词：

Gyrotron; Terahertz radiation; Frequency tuning; Spectroscopy; Positronium; BAND;

D O I：

10.1007/s10762-018-0522-2

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The feasibility of a high-power sub-THz gyrotron with smooth wideband frequency tuning suitable for direct measurement of the positronium hyperfine structure is demonstrated numerically using both averaged equations and PIC-code simulations. Analytical estimates show that the frequency-tunable powerful sub-THz radiation can be generated through the excitation of high-order axial modes in a gyrotron with short cavity driven by an electron beam with high current. Simulations show that an output power of 0.5-1 kW can be obtained at a frequency of about 0.2 THz within a 10-GHz band which are the parameters needed for testing of quantum electrodynamics predictions through the spectroscopy of positronium.

引用

页码：975 / 983

页数：9

共 30 条

[1] ELECTRON TUNING OF FREQUENCY IN GYROTRONS [J].

ANTAKOV, II ;

ZASYPKIN, EV ;

SOKOLOV, EV .

INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES, 1993, 14 (05) :1001-1015

[2] Direct Measurement of Positronium HyperFine Structure: ∼ A New Horizon of Precision Spectroscopy Using Gyrotrons ∼ [J].

Asai, Shoji ;

Yamazaki, Takayuki ;

Miyazaki, Akira ;

Suehara, Taikan ;

Namba, Toshio ;

Kobayashi, Tomio ;

Saito, Haruhiko ;

Idehara, Takatoshi ;

Ogawa, Isamu ;

Sabchevski, S. .

JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 2012, 33 (07) :766-776

[3] A 250 GHz gyrotron with a 3 GHz tuning bandwidth for dynamic nuclear polarization [J].

Barnes, Alexander B. ;

Nanni, Emilio A. ;

Herzfeld, Judith ;

Griffin, Robert G. ;

Temkin, Richard J. .

JOURNAL OF MAGNETIC RESONANCE, 2012, 221 :147-153

[4] Smooth Wideband Frequency Tuning in Low-Voltage Gyrotron With Cathode-End Power Output [J].

Bratman, V. L. ;

Fedotov, A. E. ;

Kalynov, Yu. K. ;

Osharin, I. V. ;

Zavolsky, N. A. .

IEEE TRANSACTIONS ON ELECTRON DEVICES, 2017, 64 (12) :5147-5150

[5]

Bratman V.L., 1975, RADIOPHYS QUANT EL+, V18, P772, DOI [10.1007/BF01036776, DOI 10.1007/BF01036776]

[6]

Bratman V. L., 1976, ELEKTRONNAYA TEKHN 1, P46

[7]

Bratman VL., 1973, RADIOPHYS QUANT EL, V16, P474, DOI DOI 10.1007/BF01030898

[8] Frequency tunable gyrotron using backward-wave components [J].

Chang, T. H. ;

Idehara, T. ;

Ogawa, I. ;

Agusu, L. ;

Kobayashi, S. .

JOURNAL OF APPLIED PHYSICS, 2009, 105 (06)

[9] Stepwise frequency tuning of a gyrotron backward-wave oscillator [J].

Chang, TH ;

Chen, SH .

PHYSICS OF PLASMAS, 2005, 12 (01) :1-5

[10]

GAPONOV AV, 1981, INT J ELECTRON, V51, P277, DOI 10.1080/00207218108901338

← 1 2 3 →