Class information for:
Level 1: ELECT ENGN OPTOELECT TECHNOL//GAAS PHOTOCATHODE//GAN PHOTOCATHODE

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
2481 2             ELECT ENGN OPTOELECT TECHNOL//PHYS BIOL ULTRAFAST SCI TECHNOL//PHOTOCATHODE 4188
14530 1                   ELECT ENGN OPTOELECT TECHNOL//GAAS PHOTOCATHODE//GAN PHOTOCATHODE 793

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ELECT ENGN OPTOELECT TECHNOL address 2577456 17% 48% 135
2 GAAS PHOTOCATHODE authKW 1276167 4% 94% 34
3 GAN PHOTOCATHODE authKW 715362 2% 100% 18
4 EXPONENTIAL DOPING authKW 361292 1% 91% 10
5 POLARIZED ELECTRON SOURCE authKW 292645 1% 82% 9
6 NEGATIVE ELECTRON AFFINITY authKW 274059 3% 34% 20
7 PHOTOCATHODE authKW 262766 6% 14% 47
8 CS O ACTIVATION authKW 238454 1% 100% 6
9 VARIED DOPING authKW 238454 1% 100% 6
10 LOW LIGHT LEVEL TECHNOL address 216372 1% 78% 7

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Applied 2612 38% 0% 300
2 Physics, Condensed Matter 1545 24% 0% 193
3 Physics, Multidisciplinary 1009 18% 0% 139
4 Optics 816 15% 0% 115
5 Materials Science, Coatings & Films 628 7% 0% 54
6 Instruments & Instrumentation 427 8% 0% 64
7 Spectroscopy 317 6% 0% 48
8 Physics, Nuclear 309 6% 0% 51
9 Physics, Particles & Fields 238 7% 0% 52
10 Nuclear Science & Technology 135 5% 0% 36

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ELECT ENGN OPTOELECT TECHNOL 2577456 17% 48% 135
2 LOW LIGHT LEVEL TECHNOL 216372 1% 78% 7
3 ENGN NEW ENERGY TECHNOL JIANGXI PROV 165591 1% 83% 5
4 ELECT OPT ENGN 159714 6% 8% 48
5 ELECT ENGN OPTO ELECT TECHNOL 158969 1% 100% 4
6 ENGN NUCL TECHNOL PLICAT 123287 1% 28% 11
7 ELE ON ELECT 119227 0% 100% 3
8 ELE ON ENGN PHOTOELECT TECHNOL 79485 0% 100% 2
9 ENGN NEW ENERGY TECHNOL EQUIPMENT JIANG 59611 0% 50% 3
10 AICHI SYNCHROTRON RADIAT 51094 0% 43% 3

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 OPTIK 3552 4% 0% 32
2 ACTA PHYSICA SINICA 3404 5% 0% 42
3 SOVIET PHYSICS SEMICONDUCTORS-USSR 2819 3% 0% 20
4 FIZIKA TVERDOGO TELA 1569 3% 0% 21
5 APPLIED SURFACE SCIENCE 1517 5% 0% 38
6 JETP LETTERS 1450 3% 0% 21
7 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 1180 1% 0% 8
8 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 1111 4% 0% 35
9 OPTOELECTRONICS AND ADVANCED MATERIALS-RAPID COMMUNICATIONS 956 1% 0% 8
10 CHINESE PHYSICS B 947 2% 0% 16

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 GAAS PHOTOCATHODE 1276167 4% 94% 34 Search GAAS+PHOTOCATHODE Search GAAS+PHOTOCATHODE
2 GAN PHOTOCATHODE 715362 2% 100% 18 Search GAN+PHOTOCATHODE Search GAN+PHOTOCATHODE
3 EXPONENTIAL DOPING 361292 1% 91% 10 Search EXPONENTIAL+DOPING Search EXPONENTIAL+DOPING
4 POLARIZED ELECTRON SOURCE 292645 1% 82% 9 Search POLARIZED+ELECTRON+SOURCE Search POLARIZED+ELECTRON+SOURCE
5 NEGATIVE ELECTRON AFFINITY 274059 3% 34% 20 Search NEGATIVE+ELECTRON+AFFINITY Search NEGATIVE+ELECTRON+AFFINITY
6 PHOTOCATHODE 262766 6% 14% 47 Search PHOTOCATHODE Search PHOTOCATHODE
7 CS O ACTIVATION 238454 1% 100% 6 Search CS+O+ACTIVATION Search CS+O+ACTIVATION
8 VARIED DOPING 238454 1% 100% 6 Search VARIED+DOPING Search VARIED+DOPING
9 GAALAS PHOTOCATHODE 198712 1% 100% 5 Search GAALAS+PHOTOCATHODE Search GAALAS+PHOTOCATHODE
10 INTEGRAL SENSITIVITY 198712 1% 100% 5 Search INTEGRAL+SENSITIVITY Search INTEGRAL+SENSITIVITY

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 33536 NANOMAT CHARACTERIZAT SCI PROC TECHNOL//AG CUINSE2//A SI MEMRISTOR
2 13148 PHOTOCATHODE//METALLIC PHOTOCATHODES//PHOTOINJECTOR
3 15657 SPIN SEM//SP SEM//SPIN POLARIZED HE 4 IONS
4 27448 EDUC BLDG//PHOTON ENHANCED THERMIONIC EMISSION//THERMIONIC CONVERSION
5 14766 ALKALI METALS//ALKALINE EARTH METALS MG CA SR BA//CEA SERV RECH SUR ES IRRADIAT MAT
6 11995 GALLIUM NITRIDE//GAN0001//CAICISS
7 33729 AUGER TRANSISTOR//SELF CONSISTENT QUANTUM WELLS//AL SIO2 N SI
8 9390 ELECTRON COUNTING MODEL//INDIUM ARSENIDE//GA ADATOM
9 4208 WEBSTER//JOURNAL OF VACUUM SCIENCE & TECHNOLOGY//METAL SEMICONDUCTOR INTERFACES
10 19102 ECR HYDROGEN PLASMA//IN SITU VACUUM PROCESS//OXIDE DESORPTION

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