Class information for:
Level 2: ELECT ENGN OPTOELECT TECHNOL//PHYS BIOL ULTRAFAST SCI TECHNOL//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
10160 1                   TIME OLVED DIFFRACT//MOL MOVIES//SPECT ULTRAR IDE 1117
12703 1                   PHYS BIOL ULTRAFAST SCI TECHNOL//ULTRAFAST ELECTRON DIFFRACTION//ARTHUR AMOS NOYES CHEM PHYS 917
13148 1                   PHOTOCATHODE//METALLIC PHOTOCATHODES//PHOTOINJECTOR 888
14530 1                   ELECT ENGN OPTOELECT TECHNOL//GAAS PHOTOCATHODE//GAN PHOTOCATHODE 793
27448 1                   EDUC BLDG//PHOTON ENHANCED THERMIONIC EMISSION//THERMIONIC CONVERSION 249
33536 1                   NANOMAT CHARACTERIZAT SCI PROC TECHNOL//AG CUINSE2//A SI MEMRISTOR 137
37211 1                   ULTRAFAST LASER DIAGNOSTICS//BEAM SIZE AND POSITION//DIAGNOSTICS OF REPEATED SIGNALS INCLUDING THOSE OF SYNCHROTRON RADIATION IN THE ACCUMULATION MODE 87

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ELECT ENGN OPTOELECT TECHNOL address 509752 3% 49% 138
2 PHYS BIOL ULTRAFAST SCI TECHNOL address 431781 2% 64% 89
3 PHOTOCATHODE authKW 340637 3% 37% 123
4 ULTRAFAST ELECTRON DIFFRACTION authKW 269079 1% 87% 41
5 GAAS PHOTOCATHODE authKW 256010 1% 97% 35
6 GAN PHOTOCATHODE authKW 135425 0% 100% 18
7 ARTHUR AMOS NOYES CHEM PHYS address 134910 2% 18% 100
8 PHOTOINJECTOR authKW 107768 1% 43% 33
9 ULTRAFAST ELECTRON MICROSCOPY authKW 86738 0% 82% 14
10 EDUC BLDG address 83044 1% 39% 28

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Applied 13181 37% 0% 1552
2 Instruments & Instrumentation 8478 15% 0% 618
3 Physics, Nuclear 6152 12% 0% 491
4 Physics, Particles & Fields 4407 11% 0% 477
5 Spectroscopy 3988 9% 0% 375
6 Optics 3691 14% 0% 567
7 Nuclear Science & Technology 3678 9% 0% 388
8 Physics, Multidisciplinary 3472 15% 0% 608
9 Physics, Condensed Matter 1509 12% 0% 497
10 Physics, Atomic, Molecular & Chemical 1411 8% 0% 352

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ELECT ENGN OPTOELECT TECHNOL 509752 3% 49% 138
2 PHYS BIOL ULTRAFAST SCI TECHNOL 431781 2% 64% 89
3 ARTHUR AMOS NOYES CHEM PHYS 134910 2% 18% 100
4 EDUC BLDG 83044 1% 39% 28
5 TIME OLVED DIFFRACT 77139 1% 49% 21
6 MOL MOVIES 58019 0% 43% 18
7 SPECT ULTRAR IDE 48070 1% 24% 27
8 LOW LIGHT LEVEL TECHNOL 40959 0% 78% 7
9 CLASSE 32585 0% 33% 13
10 CORNELL ACCELERATOR BASED SCI EDUC 32585 0% 33% 13

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 STRUCTURAL DYNAMICS 68610 1% 25% 37
2 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 28479 2% 4% 90
3 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 18613 8% 1% 325
4 REVIEW OF SCIENTIFIC INSTRUMENTS 6338 4% 1% 164
5 APPLIED PHYSICS LETTERS 4604 6% 0% 272
6 JOURNAL OF SYNCHROTRON RADIATION 3568 1% 1% 39
7 JOURNAL OF APPLIED PHYSICS 3153 5% 0% 223
8 LASER AND PARTICLE BEAMS 3061 1% 1% 31
9 PHYSICAL REVIEW ACCELERATORS AND BEAMS 2780 0% 3% 11
10 APPLIED PHYSICS B-LASERS AND OPTICS 2253 1% 1% 49

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PHOTOCATHODE 340637 3% 37% 123 Search PHOTOCATHODE Search PHOTOCATHODE
2 ULTRAFAST ELECTRON DIFFRACTION 269079 1% 87% 41 Search ULTRAFAST+ELECTRON+DIFFRACTION Search ULTRAFAST+ELECTRON+DIFFRACTION
3 GAAS PHOTOCATHODE 256010 1% 97% 35 Search GAAS+PHOTOCATHODE Search GAAS+PHOTOCATHODE
4 GAN PHOTOCATHODE 135425 0% 100% 18 Search GAN+PHOTOCATHODE Search GAN+PHOTOCATHODE
5 PHOTOINJECTOR 107768 1% 43% 33 Search PHOTOINJECTOR Search PHOTOINJECTOR
6 ULTRAFAST ELECTRON MICROSCOPY 86738 0% 82% 14 Search ULTRAFAST+ELECTRON+MICROSCOPY Search ULTRAFAST+ELECTRON+MICROSCOPY
7 EXPONENTIAL DOPING 82760 0% 100% 11 Search EXPONENTIAL+DOPING Search EXPONENTIAL+DOPING
8 NEGATIVE ELECTRON AFFINITY 62756 1% 38% 22 Search NEGATIVE+ELECTRON+AFFINITY Search NEGATIVE+ELECTRON+AFFINITY
9 METALLIC PHOTOCATHODES 60189 0% 100% 8 Search METALLIC+PHOTOCATHODES Search METALLIC+PHOTOCATHODES
10 POLARIZED ELECTRON SOURCE 55398 0% 82% 9 Search POLARIZED+ELECTRON+SOURCE Search POLARIZED+ELECTRON+SOURCE

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 2


rank cluster_id2 link
1 1890 FREE ELECTRON LASER//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT//UNDULATOR
2 2732 COHERENT PHONONS//COMPLEX MATTER//TRANSIENT REFLECTING GRATING
3 285 PHYSICS OF PLASMAS//PHYSICS, FLUIDS & PLASMAS//JOURNAL OF PLASMA PHYSICS
4 626 HIGH ORDER HARMONIC GENERATION//PHYSICAL REVIEW A//JR MACDONALD
5 2475 IMAGE POTENTIAL STATES//MAT FIS SAILA//TWO PHOTON PHOTOEMISSION
6 2016 FIELD EMISSION//ATOM PROBE TOMOGRAPHY//ATOM PROBE
7 1369 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS//STORAGE RING//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
8 2362 CHANNELING RADIATION//SMITH PURCELL RADIATION//TRANSITION RADIATION
9 508 LASER CUTTING//FEMTOSECOND LASER//LASER CLEANING
10 2814 SPIN CROSSOVER//SPIN TRANSITION//SPIN CROSSOVER COMPLEX

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