Class information for:
Level 1: TRAVELING WAVE TUBE TWT//TRAVELING WAVE TUBE//SLOW WAVE STRUCTURE SWS

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
13 4 PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS 1062565
228 3       PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT//FREE ELECTRON LASER 48839
955 2             GYROTRON//IEEE TRANSACTIONS ON PLASMA SCIENCE//HIGH POWER MICROWAVE 11076
9353 1                   TRAVELING WAVE TUBE TWT//TRAVELING WAVE TUBE//SLOW WAVE STRUCTURE SWS 1195

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 TRAVELING WAVE TUBE TWT authKW 2662365 10% 88% 115
2 TRAVELING WAVE TUBE authKW 1910731 9% 66% 110
3 SLOW WAVE STRUCTURE SWS authKW 1596997 6% 83% 73
4 SCI TECHNOL VACUUM ELECT address 1203087 5% 72% 63
5 HIGH POWER VACUUM ELECT address 934771 4% 74% 48
6 SHEET BEAM authKW 930401 4% 84% 42
7 FOLDED WAVEGUIDE authKW 820526 3% 84% 37
8 TRAVELING WAVE TUBES TWTS authKW 742995 3% 78% 36
9 VACUUM ELECT address 607568 4% 48% 48
10 SLOW WAVE STRUCTURE authKW 544294 4% 40% 52

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Engineering, Electrical & Electronic 14070 63% 0% 752
2 Physics, Applied 6021 46% 0% 549
3 Physics, Fluids & Plasmas 5370 17% 0% 200
4 Telecommunications 1555 10% 0% 122
5 Optics 768 12% 0% 141
6 Physics, Multidisciplinary 501 11% 0% 130
7 Nuclear Science & Technology 16 2% 0% 22
8 Instruments & Instrumentation 10 2% 0% 22
9 Engineering, Aerospace 10 1% 0% 8
10 Physics, Nuclear 6 1% 0% 17

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SCI TECHNOL VACUUM ELECT 1203087 5% 72% 63
2 HIGH POWER VACUUM ELECT 934771 4% 74% 48
3 VACUUM ELECT 607568 4% 48% 48
4 MICROWAVE TUBE DEV 544087 2% 74% 28
5 HIGH POWER MICROWAVE SOURCES TECHNOL 472857 4% 39% 46
6 MICROWAVE TUBES 301672 3% 37% 31
7 VACUUM ELE OPHYS 164819 1% 63% 10
8 VACUUM ELECT BRANCH 143565 1% 39% 14
9 MICROWAVE TUBES AREA 127630 1% 44% 11
10 ANALEX CORP 125648 1% 53% 9

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 IEEE TRANSACTIONS ON ELECTRON DEVICES 183324 28% 2% 330
2 IEEE TRANSACTIONS ON PLASMA SCIENCE 50947 12% 1% 139
3 JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES 26340 3% 3% 31
4 INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES 20231 4% 1% 52
5 JOURNAL OF COMMUNICATIONS TECHNOLOGY AND ELECTRONICS 18694 4% 1% 48
6 ACTA PHYSICA SINICA 4298 5% 0% 58
7 JOURNAL OF INFRARED AND MILLIMETER WAVES 4184 2% 1% 18
8 JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS 4028 2% 1% 25
9 PHYSICS OF PLASMAS 4001 5% 0% 55
10 IEEE TRANSACTIONS ON TERAHERTZ SCIENCE AND TECHNOLOGY 2869 1% 1% 8

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 TRAVELING WAVE TUBE TWT 2662365 10% 88% 115 Search TRAVELING+WAVE+TUBE+TWT Search TRAVELING+WAVE+TUBE+TWT
2 TRAVELING WAVE TUBE 1910731 9% 66% 110 Search TRAVELING+WAVE+TUBE Search TRAVELING+WAVE+TUBE
3 SLOW WAVE STRUCTURE SWS 1596997 6% 83% 73 Search SLOW+WAVE+STRUCTURE+SWS Search SLOW+WAVE+STRUCTURE+SWS
4 SHEET BEAM 930401 4% 84% 42 Search SHEET+BEAM Search SHEET+BEAM
5 FOLDED WAVEGUIDE 820526 3% 84% 37 Search FOLDED+WAVEGUIDE Search FOLDED+WAVEGUIDE
6 TRAVELING WAVE TUBES TWTS 742995 3% 78% 36 Search TRAVELING+WAVE+TUBES+TWTS Search TRAVELING+WAVE+TUBES+TWTS
7 SLOW WAVE STRUCTURE 544294 4% 40% 52 Search SLOW+WAVE+STRUCTURE Search SLOW+WAVE+STRUCTURE
8 KLYSTRON 536107 4% 39% 52 Search KLYSTRON Search KLYSTRON
9 TWT 523800 2% 83% 24 Search TWT Search TWT
10 SHEET ELECTRON BEAM 498240 2% 82% 23 Search SHEET+ELECTRON+BEAM Search SHEET+ELECTRON+BEAM

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 38083 COPLANAR COMB STRUCTURE//COUPLED HELICES AND SLOW WAVE STRUCTURES//CROSS WOUND HELICES
2 5567 SCI TECHNOL HIGH POWER MICROWAVE//HIGH POWER MICROWAVE HPM//HIGH POWER MICROWAVE
3 28385 MICROUNDULATOR//ELECTROSTATIC UNDULATOR//WIGGLER
4 21374 RELATIVISTIC MAGNETRON//MAGNETRON//PLASMA PULSED POWER MICROWAVE
5 32423 GROUP DELAY ENGINEERING//PHASER//TERAHERZTS ELECT
6 944 GYROTRON//INTERNATIONAL JOURNAL OF INFRARED AND MILLIMETER WAVES//DEV FAR INFRARED REG
7 10337 DIFFRACTION RADIATION//SMITH PURCELL RADIATION//TRANSITION RADIATION
8 16692 SCANDATE CATHODE//DISPENSER CATHODE//IMPREGNATED CATHODES
9 32105 PRIMARY ELECTRON BEAMS//RADIOTEKHNIKA I ELEKTRONIKA//ELECTRON PLASMA OSCILLATION
10 21270 RADIOTEKHNIKA I ELEKTRONIKA//AUTODYNE CHARACTERISTICS//AUTODYNE OSCILLATOR

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