Class information for:
Level 1: ANTIHYDROGEN//NONNEUTRAL PLASMA//ULMER INITIAT UNIT

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
335 3       JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//PHYSICAL REVIEW A//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL 37816
1258 2             ANTIHYDROGEN//PHYSICAL REVIEW A//POSITRONIUM 9169
7350 1                   ANTIHYDROGEN//NONNEUTRAL PLASMA//ULMER INITIAT UNIT 1403

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ANTIHYDROGEN authKW 1553063 6% 79% 88
2 NONNEUTRAL PLASMA authKW 421719 2% 57% 33
3 ULMER INITIAT UNIT address 224622 1% 100% 10
4 ANTIPROTON authKW 189622 3% 22% 38
5 NONNEUTRAL PLASMAS authKW 181942 1% 90% 9
6 ELECTRON PLASMA authKW 159870 1% 65% 11
7 ANTIMATTER authKW 139085 2% 26% 24
8 POSITRONIUM authKW 92246 3% 10% 41
9 NONNEUTRAL ELECTRON PLASMA authKW 89849 0% 100% 4
10 DIPARTIMENTO CHIM FIS INGN MAT address 79825 2% 15% 24

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Fluids & Plasmas 17151 27% 0% 382
2 Physics, Multidisciplinary 4988 28% 0% 393
3 Physics, Nuclear 4881 18% 0% 247
4 Physics, Atomic, Molecular & Chemical 4421 23% 0% 319
5 Instruments & Instrumentation 1435 11% 0% 151
6 Optics 1136 13% 0% 183
7 Nuclear Science & Technology 1072 9% 0% 122
8 Physics, Particles & Fields 561 7% 0% 104
9 Physics, Condensed Matter 197 8% 0% 117
10 Spectroscopy 185 4% 0% 53

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ULMER INITIAT UNIT 224622 1% 100% 10
2 DIPARTIMENTO CHIM FIS INGN MAT 79825 2% 15% 24
3 GRP EGATO B CIA 55280 1% 31% 8
4 GRP B CIA 51045 0% 45% 5
5 ATOM PHYS 44973 4% 3% 63
6 IKP 37972 2% 8% 22
7 AEROSP SCI TECH 29948 0% 67% 2
8 ATOM PHYS UNIT 25266 0% 38% 3
9 ATR ABORAT 22462 0% 100% 1
10 BASSE TEMP 22462 0% 100% 1

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PHYSICS OF PLASMAS 58659 16% 1% 226
2 HYPERFINE INTERACTIONS 19873 6% 1% 83
3 PHYSICS OF FLUIDS B-PLASMA PHYSICS 14707 3% 2% 36
4 PHYSICAL REVIEW LETTERS 7359 13% 0% 179
5 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 5198 4% 0% 62
6 PHYSICAL REVIEW A 2737 7% 0% 93
7 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 1679 4% 0% 50
8 PHYSICA SCRIPTA 1260 2% 0% 31
9 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 1110 3% 0% 47
10 JOURNAL OF PLASMA PHYSICS 1071 1% 0% 12

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 ANTIHYDROGEN 1553063 6% 79% 88 Search ANTIHYDROGEN Search ANTIHYDROGEN
2 NONNEUTRAL PLASMA 421719 2% 57% 33 Search NONNEUTRAL+PLASMA Search NONNEUTRAL+PLASMA
3 ANTIPROTON 189622 3% 22% 38 Search ANTIPROTON Search ANTIPROTON
4 NONNEUTRAL PLASMAS 181942 1% 90% 9 Search NONNEUTRAL+PLASMAS Search NONNEUTRAL+PLASMAS
5 ELECTRON PLASMA 159870 1% 65% 11 Search ELECTRON+PLASMA Search ELECTRON+PLASMA
6 ANTIMATTER 139085 2% 26% 24 Search ANTIMATTER Search ANTIMATTER
7 POSITRONIUM 92246 3% 10% 41 Search POSITRONIUM Search POSITRONIUM
8 NONNEUTRAL ELECTRON PLASMA 89849 0% 100% 4 Search NONNEUTRAL+ELECTRON+PLASMA Search NONNEUTRAL+ELECTRON+PLASMA
9 POSITRON COOLING 71877 0% 80% 4 Search POSITRON+COOLING Search POSITRON+COOLING
10 PENNING TRAP 69010 2% 11% 28 Search PENNING+TRAP Search PENNING+TRAP

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 17979 ANTIPROTONIC HELIUM//ANTIPROTONIC HELIUM ATOM//EXOTIC ATOMS
2 21744 SWIERK COMP//J PET//POSITRONIUM
3 6440 POSITRON SCATTERING//POSITRON//POSITRONIUM FORMATION
4 21374 RELATIVISTIC MAGNETRON//MAGNETRON//PLASMA PULSED POWER MICROWAVE
5 1287 POSITRON ANNIHILATION//POSITRON BEAM//SLOW POSITRON BEAM
6 2885 TRAPPED IONS//TIME FREQUENCY//ION TRAP
7 35999 GLH SYSTEM//PERIODIC NON TRAVELLING WAVES//SELF CONSISTENT MODELLING
8 31245 DIETERICI GAS//MUTUAL GRAVITATIONAL INTERACTIONS//VIRTUAL GRAVITATIONAL DIPOLES
9 27106 ELECTROSTATIC STORAGE RING//CHARGE DETECTION MASS SPECTROMETRY//CYCLIC ACCELERATOR
10 24913 MINI RT//DIPOLE CONFINEMENT//LEVITATED DIPOLE

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