Class information for:
Level 2: ANTIHYDROGEN//PHYSICAL REVIEW A//POSITRONIUM

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
3240 1                   LAMB SHIFT//BOUND STATE QED//KASTLER BROSSEL 2064
5273 1                   ATOMOS MOL ESPECIAIS//FULL CORE PLUS CORRELATION//LITHIUM LIKE SYSTEMS 1678
6440 1                   POSITRON SCATTERING//POSITRON//POSITRONIUM FORMATION 1512
7350 1                   ANTIHYDROGEN//NONNEUTRAL PLASMA//ULMER INITIAT UNIT 1403
10644 1                   MUON CATALYZED FUSION//MUONIC MOLECULE//MUONIC HYDROGEN 1075
17979 1                   ANTIPROTONIC HELIUM//ANTIPROTONIC HELIUM ATOM//EXOTIC ATOMS 599
21744 1                   SWIERK COMP//J PET//POSITRONIUM 430
22341 1                   DYNAMIC DIPOLE POLARIZABILITIES//ELECTRIC DIPOLE E1 AND MAGNETIC QUADRUPOLE M2//ENERGY DEPENDENT INTERACTIONS 408

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 ANTIHYDROGEN authKW 288576 1% 87% 97
2 PHYSICAL REVIEW A journal 186256 21% 3% 1918
3 POSITRONIUM authKW 164445 2% 34% 140
4 MUON CATALYZED FUSION authKW 157433 1% 88% 52
5 PHYSICS, ATOMIC, MOLECULAR & CHEMICAL WoSSC 141327 49% 1% 4451
6 HYPERFINE INTERACTIONS journal 112499 6% 7% 505
7 EXOTIC ATOMS authKW 110547 1% 62% 52
8 POSITRON authKW 109941 2% 23% 141
9 MUONIC MOLECULE authKW 106497 0% 100% 31
10 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS journal 104765 8% 4% 708

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Atomic, Molecular & Chemical 141327 49% 1% 4451
2 Optics 56031 33% 1% 3027
3 Physics, Nuclear 34725 18% 1% 1681
4 Physics, Multidisciplinary 25380 25% 0% 2287
5 Physics, Particles & Fields 5493 9% 0% 811
6 Nuclear Science & Technology 4981 7% 0% 684
7 Instruments & Instrumentation 3623 7% 0% 646
8 Physics, Fluids & Plasmas 2336 4% 0% 406
9 Physics, Condensed Matter 723 7% 0% 629
10 Spectroscopy 609 3% 0% 265

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 SWIERK COMP 75719 0% 96% 23
2 ATOMOS MOL ESPECIAIS 73647 0% 79% 27
3 KASTLER BROSSEL 54797 2% 10% 158
4 MUON SCI 39986 1% 22% 54
5 ARC ANTIMATTER MATTER STUDIES 35172 1% 21% 49
6 ULMER INITIAT UNIT 34354 0% 100% 10
7 MEDIUM ENERGY PHYS 29300 0% 53% 16
8 QUANTUM CHEM 28116 1% 9% 90
9 THEORET INTERDISCIPLINARY 27483 0% 100% 8
10 DIPARTIMENTO CHIM FIS INGN MAT 24460 0% 21% 34

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PHYSICAL REVIEW A 186256 21% 3% 1918
2 HYPERFINE INTERACTIONS 112499 6% 7% 505
3 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 104765 8% 4% 708
4 CANADIAN JOURNAL OF PHYSICS 19428 2% 3% 189
5 EUROPEAN PHYSICAL JOURNAL D 16804 2% 3% 166
6 PHYSICAL REVIEW LETTERS 14566 7% 1% 656
7 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 11977 4% 1% 341
8 PHYSICS OF PLASMAS 8677 2% 1% 227
9 PHYSICA SCRIPTA 7299 2% 1% 191
10 ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS 5836 1% 3% 67

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 ANTIHYDROGEN 288576 1% 87% 97 Search ANTIHYDROGEN Search ANTIHYDROGEN
2 POSITRONIUM 164445 2% 34% 140 Search POSITRONIUM Search POSITRONIUM
3 MUON CATALYZED FUSION 157433 1% 88% 52 Search MUON+CATALYZED+FUSION Search MUON+CATALYZED+FUSION
4 EXOTIC ATOMS 110547 1% 62% 52 Search EXOTIC+ATOMS Search EXOTIC+ATOMS
5 POSITRON 109941 2% 23% 141 Search POSITRON Search POSITRON
6 MUONIC MOLECULE 106497 0% 100% 31 Search MUONIC+MOLECULE Search MUONIC+MOLECULE
7 MUONIC HYDROGEN 89774 0% 93% 28 Search MUONIC+HYDROGEN Search MUONIC+HYDROGEN
8 MUONIC ATOMS 84966 0% 85% 29 Search MUONIC+ATOMS Search MUONIC+ATOMS
9 ANTIPROTONIC HELIUM 75578 0% 100% 22 Search ANTIPROTONIC+HELIUM Search ANTIPROTONIC+HELIUM
10 ANTIPROTON 67506 1% 34% 58 Search ANTIPROTON Search ANTIPROTON

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
1 735 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//PHYSICAL REVIEW A//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
2 2162 POSITRON ANNIHILATION//POSITRONIUM//FREE VOLUME
3 1053 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//PHYSICA SCRIPTA//ATOMIC DATA AND NUCLEAR DATA TABLES
4 3092 STARK BROADENING//GRP RECH PHYS ATOM ASTROPHYS//JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER
5 3384 PHYSICS, NUCLEAR//DIPARTIMENTO AUTOM IND//DIPARTIMENTO CHIM FIS MAT
6 1692 DISSOCIATIVE ELECTRON ATTACHMENT//ELECTRON ATTACHMENT//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL
7 1640 TIME FREQUENCY//ATOMIC CLOCKS//FREQUENCY STANDARD
8 1022 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL//PHYSICAL REVIEW A
9 1952 IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT//METROLOGIA//JOSEPHSON ARRAYS
10 674 PHYSICS, NUCLEAR//PHYSICAL REVIEW C//FEW-BODY SYSTEMS

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