Class information for:
Level 1: POSITRON//POSITRONIUM FORMATION//POSITRONIUM

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
8394 1257 29.7 63%


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
10 4 OPTICS//PHYSICS, PARTICLES & FIELDS//PHYSICS, MULTIDISCIPLINARY 1131262
251 3       JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//PHYSICAL REVIEW A//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL 46185
180 2             JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//PHYSICAL REVIEW A//PHYSICS, ATOMIC, MOLECULAR & CHEMICAL 21930
8394 1                   POSITRON//POSITRONIUM FORMATION//POSITRONIUM 1257

Terms with highest relevance score


rank Term termType Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 POSITRON authKW 240700 6% 13% 77
2 POSITRONIUM FORMATION authKW 183006 1% 42% 18
3 POSITRONIUM authKW 174799 4% 13% 54
4 POSITROPHILIC ELECTRONS authKW 170034 1% 100% 7
5 POSITRON ELECTRON ANNIHILATION authKW 155457 1% 80% 8
6 ANNIHILATION RATE authKW 140532 1% 64% 9
7 POSITRON BINDING authKW 121453 0% 100% 5
8 POSITRON IMPACT IONIZATION authKW 121453 0% 100% 5
9 QUANTUM SCATTERING THEORY GRP address 121453 0% 100% 5
10 POSITRON COLLISIONS authKW 109305 0% 75% 6

Web of Science journal categories


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 Physics, Atomic, Molecular & Chemical 41759 71% 0% 891
2 Optics 18024 50% 0% 624
3 Physics, Multidisciplinary 2928 23% 0% 291
4 Physics, Nuclear 2361 14% 0% 170
5 Nuclear Science & Technology 1772 12% 0% 146
6 Instruments & Instrumentation 1334 11% 0% 137
7 Chemistry, Physical 94 9% 0% 114
8 Physics, Condensed Matter 22 5% 0% 57
9 Physics, Mathematical 3 1% 0% 15
10 Mathematics, Interdisciplinary Applications 0 1% 0% 8

Address terms


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 QUANTUM SCATTERING THEORY GRP 121453 0% 100% 5
2 ARC ANTI MATTER STUDIES 86749 0% 71% 5
3 UCL PHYS ASTRON 86358 1% 44% 8
4 ANTIMATTER MATTER STUDIES 57797 1% 18% 13
5 ATOM MOL ESPECIAIS 48581 0% 100% 2
6 ATOMOS MOL ESPECIAIS 47097 1% 24% 8
7 ARC ANTIMATTER MATTER STUDIES 41844 2% 9% 20
8 ATOM MOL PHYS S 39867 1% 11% 15
9 ARC ANTIMATTER STUDIES 32386 0% 67% 2
10 IST SCI MATEMAT FISICHE CHIM 32386 0% 67% 2

Journals


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class
1 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 93415 20% 2% 249
2 PHYSICAL REVIEW A 40593 26% 1% 332
3 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 12882 10% 0% 130
4 EUROPEAN PHYSICAL JOURNAL D 6220 3% 1% 37
5 CANADIAN JOURNAL OF PHYSICS 5990 3% 1% 39
6 AUSTRALIAN JOURNAL OF PHYSICS 4001 1% 1% 15
7 HYPERFINE INTERACTIONS 3569 3% 0% 34
8 ADVANCES IN ATOMIC AND MOLECULAR PHYSICS 2989 0% 4% 3
9 PHYSICAL REVIEW LETTERS 1417 6% 0% 77
10 ADVANCES IN ATOMIC MOLECULAR AND OPTICAL PHYSICS 819 0% 1% 3

Author Key Words


Rank Term Chi square Shr. of publ. in
class containing
term		 Class's shr. of
term's tot. occurrences		 #P with
term in
class		 LCSH search Wikipedia search
1 POSITRON 240700 6% 13% 77 Search POSITRON Search POSITRON
2 POSITRONIUM FORMATION 183006 1% 42% 18 Search POSITRONIUM+FORMATION Search POSITRONIUM+FORMATION
3 POSITRONIUM 174799 4% 13% 54 Search POSITRONIUM Search POSITRONIUM
4 POSITROPHILIC ELECTRONS 170034 1% 100% 7 Search POSITROPHILIC+ELECTRONS Search POSITROPHILIC+ELECTRONS
5 POSITRON ELECTRON ANNIHILATION 155457 1% 80% 8 Search POSITRON+ELECTRON+ANNIHILATION Search POSITRON+ELECTRON+ANNIHILATION
6 ANNIHILATION RATE 140532 1% 64% 9 Search ANNIHILATION+RATE Search ANNIHILATION+RATE
7 POSITRON BINDING 121453 0% 100% 5 Search POSITRON+BINDING Search POSITRON+BINDING
8 POSITRON IMPACT IONIZATION 121453 0% 100% 5 Search POSITRON+IMPACT+IONIZATION Search POSITRON+IMPACT+IONIZATION
9 POSITRON COLLISIONS 109305 0% 75% 6 Search POSITRON+COLLISIONS Search POSITRON+COLLISIONS
10 POSITRON SCATTERING 100107 1% 32% 13 Search POSITRON+SCATTERING Search POSITRON+SCATTERING

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.


Rank Reference # ref. in
cl.		 Shr. of ref. in
cl.		 Citations
1 CHIARI, L , ZECCA, A , (2014) RECENT POSITRON-ATOM CROSS SECTION MEASUREMENTS AND CALCULATIONS.EUROPEAN PHYSICAL JOURNAL D. VOL. 68. ISSUE 10. P. - 117 82% 11
2 KADYROV, AS , BRAY, I , (2016) RECENT PROGRESS IN THE DESCRIPTION OF POSITRON SCATTERING FROM ATOMS USING THE CONVERGENT CLOSE-COUPLING THEORY.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. VOL. 49. ISSUE 22. P. - 136 63% 2
3 WALTERS, HRJ , LARICCHIA, G , (2012) POSITRONIUM COLLISION PHYSICS.RIVISTA DEL NUOVO CIMENTO. VOL. 35. ISSUE 6. P. 305 -351 132 76% 10
4 LARICCHIA, G , ARMITAGE, S , KOVER, A , MURTAGH, DJ , (2008) IONIZING COLLISIONS BY POSITRONS AND POSITRONIUM IMPACT ON THE INERT ATOMS.ADVANCES IN ATOMIC, MOLECULAR, AND OPTICAL PHYSICS, VOL 56. VOL. 56. ISSUE . P. 1 -47 127 84% 27
5 SURKO, CM , GRIBAKIN, GF , BUCKMAN, SJ , (2005) LOW-ENERGY POSITRON INTERACTIONS WITH ATOMS AND MOLECULES.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. VOL. 38. ISSUE 6. P. R57 -R126 116 61% 181
6 GRIBAKIN, GF , YOUNG, JA , SURKO, CM , (2010) POSITRON-MOLECULE INTERACTIONS: RESONANT ATTACHMENT, ANNIHILATION, AND BOUND STATES.REVIEWS OF MODERN PHYSICS. VOL. 82. ISSUE 3. P. 2557 -2607 101 56% 78
7 DUBOIS, RD , (2016) METHODS AND PROGRESS IN STUDYING INELASTIC INTERACTIONS BETWEEN POSITRONS AND ATOMS.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS. VOL. 49. ISSUE 11. P. - 96 51% 0
8 SHIPMAN, M , ARMITAGE, S , BEALE, J , BRAWLEY, SJ , FAYER, SE , GARNER, AJ , LESLIE, DE , VAN REETH, P , LARICCHIA, G , (2015) ABSOLUTE DIFFERENTIAL POSITRONIUM-FORMATION CROSS SECTIONS.PHYSICAL REVIEW LETTERS. VOL. 115. ISSUE 3. P. - 48 84% 5
9 SEN, S , MANDAL, P , (2009) POSITRON-HELIUM COLLISIONS: POSITRONIUM FORMATION USING THE DISTORTED-WAVE APPROXIMATION.PHYSICAL REVIEW A. VOL. 80. ISSUE 6. P. - 54 90% 9
10 BLACKWOOD, JE , MCALINDEN, MT , WALTERS, HRJ , (2002) POSITRONIUM SCATTERING BY ATOMIC HYDROGEN WITH INCLUSION OF TARGET EXCITATION CHANNELS.PHYSICAL REVIEW A. VOL. 65. ISSUE 3. P. - 55 96% 32

Classes with closest relation at Level 1


Rank Class id link
1 1177 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//ARC ANTIMATTER MATTER STUDIES//ELECTRON SCATTERING
2 6089 ATOMOS MOL ESPECIAIS//MULTI COMPONENT MOLECULAR ORBITAL METHOD//GEOMETRICAL ISOTOPE EFFECT
3 34563 DECAYING PHENOMENA//LIOUVILLIAN APPROACH//LIOUVILLIAN SELF ENERGIES
4 5280 ANTIHYDROGEN//ANTIPROTONIC HELIUM//NONNEUTRAL PLASMA
5 4814 JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS//ELECTRON IMPACT EXCITATION//GENERALIZED OSCILLATOR STRENGTH
6 2210 PHYS MOL IS//ATOM MOL SUR E PHYS//TRIPLE DIFFERENTIAL CROSS SECTION
7 1595 LAMOR//ATOM MOL OPT//JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
8 14331 DEBYE PLASMA//IETP//DEBYE PLASMAS
9 15507 STARS INDIVIDUAL GRS 1758 258//STARS INDIVIDUAL 1E 17407 2942//GAMMA RAYS OBSERVATIONS
10 7976 DOUBLY EXCITED STATES//ATOMS LASERS//ATOMS LASER

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