Class information for:
Level 2: POSITRON ANNIHILATION//POSITRONIUM//FREE VOLUME

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
2170 4966 22.7 52%


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
2170 2             POSITRON ANNIHILATION//POSITRONIUM//FREE VOLUME 4966
1609 1                   POSITRON ANNIHILATION//POSITRON BEAM//SLOW POSITRON BEAM 2570
2959 1                   POSITRON ANNIHILATION//POSITRONIUM//FREE VOLUME 2103
30875 1                   POSITRON LIFETIME SPECTROMETER//LIFETIME SPECTROMETER//FAST COINCIDENCE APPARATUS 162
32957 1                   ALLOY SINGLE CRYSTALS//MED MAT IMPLANTS SH E MEMORY EFFECT//SEDIMENTATION OF COMPONENTS 131

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 ANNIHILATION authKW 1514070 11% 45% 544
2 POSITRONIUM authKW 559310 4% 47% 192
3 FREE VOLUME authKW 372934 5% 24% 258
4 POSITRON BEAM authKW 352420 2% 67% 85
5 POSITRON LIFETIME authKW 292909 2% 47% 101
6 SLOW POSITRON BEAM authKW 241067 1% 63% 62
7 POSITRON authKW 218891 3% 24% 146
8 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY authKW 124409 1% 38% 54
9 SLOW POSITRONS authKW 120464 1% 70% 28
10 POSITRON ANNIHILATION LIFETIME authKW 115240 1% 51% 37

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, Condensed Matter 15219 30% 0% 1490
2 Nuclear Science & Technology 9647 13% 0% 670
3 Physics, Atomic, Molecular & Chemical 5880 15% 0% 723
4 Polymer Science 4405 12% 0% 606
5 Physics, Applied 4064 21% 0% 1025
6 Chemistry, Physical 3997 21% 0% 1051
7 Instruments & Instrumentation 3470 9% 0% 448
8 Microscopy 3258 3% 0% 143
9 Physics, Multidisciplinary 3175 13% 0% 648
10 Materials Science, Coatings & Films 3129 6% 0% 305

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 NUCL METHODS 108451 1% 59% 30
2 RCNT 76832 0% 83% 15
3 AUSSENSTELLE HALLE 68088 0% 92% 12
4 CHIM NUCL 67228 0% 58% 19
5 NUKL FESTKORPERPHYS 55541 1% 22% 42
6 PHYS E 21 39337 0% 80% 8
7 RCNST 35760 0% 73% 8
8 ADSORPT 34140 0% 33% 17
9 BRANCH OFF HALLE 27658 0% 75% 6
10 STRUCT PHYS PROPERTIES 25611 0% 83% 5

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 MATERIALS SCIENCE FORUM 51810 8% 2% 385
2 RADIATION PHYSICS AND CHEMISTRY 41655 5% 3% 256
3 ACTA PHYSICA POLONICA A 20337 4% 2% 197
4 APPLIED SURFACE SCIENCE 12612 5% 1% 272
5 NUKLEONIKA 6907 1% 3% 41
6 JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS 5914 2% 1% 94
7 JOURNAL OF PHYSICS F-METAL PHYSICS 5313 1% 2% 42
8 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS 4602 3% 1% 158
9 PHYSICAL REVIEW B 4502 7% 0% 368
10 JOURNAL OF PHYSICS-CONDENSED MATTER 4026 3% 0% 146

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 ANNIHILATION 1514070 11% 45% 544 Search POSITRON+ANNIHILATION Search POSITRON+ANNIHILATION
2 POSITRONIUM 559310 4% 47% 192 Search POSITRONIUM Search POSITRONIUM
3 FREE VOLUME 372934 5% 24% 258 Search FREE+VOLUME Search FREE+VOLUME
4 POSITRON BEAM 352420 2% 67% 85 Search POSITRON+BEAM Search POSITRON+BEAM
5 POSITRON LIFETIME 292909 2% 47% 101 Search POSITRON+LIFETIME Search POSITRON+LIFETIME
6 SLOW POSITRON BEAM 241067 1% 63% 62 Search SLOW+POSITRON+BEAM Search SLOW+POSITRON+BEAM
7 POSITRON 218891 3% 24% 146 Search POSITRON Search POSITRON
8 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY 124409 1% 38% 54 Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY
9 SLOW POSITRONS 120464 1% 70% 28 Search SLOW+POSITRONS Search SLOW+POSITRONS
10 POSITRON ANNIHILATION LIFETIME 115240 1% 51% 37 Search POSITRON+ANNIHILATION+LIFETIME Search POSITRON+ANNIHILATION+LIFETIME

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 SCHULTZ, PJ , LYNN, KG , (1988) INTERACTION OF POSITRON BEAMS WITH SURFACES, THIN-FILMS, AND INTERFACES.REVIEWS OF MODERN PHYSICS. VOL. 60. ISSUE 3. P. 701 -779 165 85% 1154
2 HUGENSCHMIDT, C , (2016) POSITRONS INSURFACE PHYSICS.SURFACE SCIENCE REPORTS. VOL. 71. ISSUE 4. P. 547 -594 118 62% 0
3 TUOMISTO, F , MAKKONEN, I , (2013) DEFECT IDENTIFICATION IN SEMICONDUCTORS WITH POSITRON ANNIHILATION: EXPERIMENT AND THEORY.REVIEWS OF MODERN PHYSICS. VOL. 85. ISSUE 4. P. 1583 -1631 131 35% 117
4 PUSKA, MJ , NIEMINEN, RM , (1994) THEORY OF POSITRONS IN SOLIDS AND ON SOLID-SURFACES.REVIEWS OF MODERN PHYSICS. VOL. 66. ISSUE 3. P. 841 -897 95 52% 646
5 HAGIWARA, S , HU, CP , WATANABE, K , (2015) POSITRON STATES AT A LITHIUM-ADSORBED AL(100) SURFACE: TWO-COMPONENT DENSITY FUNCTIONAL THEORY SIMULATION.PHYSICAL REVIEW B. VOL. 91. ISSUE 11. P. - 50 76% 5
6 ASOKAKUMAR, P , LYNN, KG , WELCH, DO , (1994) CHARACTERIZATION OF DEFECTS IN SI AND SIO2-SI USING POSITRONS.JOURNAL OF APPLIED PHYSICS. VOL. 76. ISSUE 9. P. 4935 -4982 86 59% 245
7 DLUBEK, G , STEJNY, J , LUPKE, T , BAMFORD, D , PETTERS, K , HUBNER, C , ALAM, MA , HILL, MJ , (2002) FREE-VOLUME VARIATION IN POLYETHYLENES OF DIFFERENT CRYSTALLINITIES: POSITRON LIFETIME, DENSITY, AND X-RAY STUDIES.JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS. VOL. 40. ISSUE 1. P. 65 -81 48 94% 62
8 KURIPLACH, J , BARBIELLINI, B , (2014) IMPROVED GENERALIZED GRADIENT APPROXIMATION FOR POSITRON STATES IN SOLIDS.PHYSICAL REVIEW B. VOL. 89. ISSUE 15. P. - 50 63% 10
9 HE, CQ , SHANTAROVICH, VP , SUZUKI, T , STEPANOV, SV , SUZUKI, R , MATSUO, M , (2005) MECHANISM OF ENHANCED POSITRONIUM FORMATION IN LOW-TEMPERATURE POLYMERS.JOURNAL OF CHEMICAL PHYSICS. VOL. 122. ISSUE 21. P. - 43 98% 11
10 DLUBEK, G , DE, U , PIONTECK, J , ARUTYUNOV, NY , EDELMANN, M , KRAUSE-REHBERG, R , (2005) TEMPERATURE DEPENDENCE OF FREE VOLUME IN PURE AND SILICA-FILLED POLY(DIMETHYL SILOXANE) FROM POSITRON LIFETIME AND PVT EXPERIMENTS.MACROMOLECULAR CHEMISTRY AND PHYSICS. VOL. 206. ISSUE 8. P. 827 -840 51 71% 37

Classes with closest relation at Level 2


Rank Class id link
1 3880 L OM//ADV POLYMERS OPTIMIZED MAT//LIDMA
2 1451 ANTIHYDROGEN//AVOGADRO CONSTANT//KILOGRAM
3 1008 JOURNAL OF NUCLEAR MATERIALS//NUCLEAR SCIENCE & TECHNOLOGY//NUCL MAT SCI
4 3805 RUSSIAN JOURNAL OF NONDESTRUCTIVE TESTING//MET PHYS//FIZIKA METALLOV I METALLOVEDENIE
5 1624 ALUMINUM ALLOY//AL ZN MG CU ALLOY//METALLURGY & METALLURGICAL ENGINEERING
6 2587 SCANNING//BACKSCATTERED ELECTRONS//MICROSCOPY
7 1826 TRANSIENT ENHANCED DIFFUSION//SHALLOW JUNCTION//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
8 648 OXYGEN PRECIPITATION//OXYGEN PRECIPITATES//GETTERING
9 1083 PERVAPORATION//JOURNAL OF MEMBRANE SCIENCE//GAS SEPARATION
10 651 GLASS TRANSITION//PHYSICAL AGING//ENTHALPY RELAXATION

Go to start page