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

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
1928 5257 22.4 52%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 3)


ID, lev.
above		 Publications Label for level above
393 28155 POSITRON ANNIHILATION//POSITRONIUM//MAEAM

Classes in level below (level 1)


ID, lev. below Publications Label for level below
2917 2037 FREE VOLUME//POSITRONIUM//POSITRON ANNIHILATION
5067 1611 POSITRON BEAM//SLOW POSITRON BEAM//POSITRON MICROSCOPE
5558 1541 POSITRON ANNIHILATION//SUBSURFACE ZONES//SUBSURFACE ZONE
34539 68 DELOCALIZED POSITRONIUM//POSITRONIUM PHONON INTERACTIONS//COMMUN INFORMAT SYST S

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 POSITRON ANNIHILATION Author keyword 295 41% 11% 557
2 POSITRONIUM Author keyword 119 44% 4% 203
3 FREE VOLUME Author keyword 63 22% 5% 251
4 POSITRON BEAM Author keyword 59 61% 1% 63
5 POSITRON LIFETIME Author keyword 54 39% 2% 107
6 SLOW POSITRON BEAM Author keyword 46 55% 1% 57
7 AUSSENSTELLE HALLE Address 31 92% 0% 12
8 COINCIDENCE DOPPLER BROADENING Author keyword 27 63% 1% 27
9 POSITRON Author keyword 26 21% 2% 109
10 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY Author keyword 25 39% 1% 51

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 POSITRON ANNIHILATION 295 41% 11% 557 Search POSITRON+ANNIHILATION Search POSITRON+ANNIHILATION
2 POSITRONIUM 119 44% 4% 203 Search POSITRONIUM Search POSITRONIUM
3 FREE VOLUME 63 22% 5% 251 Search FREE+VOLUME Search FREE+VOLUME
4 POSITRON BEAM 59 61% 1% 63 Search POSITRON+BEAM Search POSITRON+BEAM
5 POSITRON LIFETIME 54 39% 2% 107 Search POSITRON+LIFETIME Search POSITRON+LIFETIME
6 SLOW POSITRON BEAM 46 55% 1% 57 Search SLOW+POSITRON+BEAM Search SLOW+POSITRON+BEAM
7 COINCIDENCE DOPPLER BROADENING 27 63% 1% 27 Search COINCIDENCE+DOPPLER+BROADENING Search COINCIDENCE+DOPPLER+BROADENING
8 POSITRON 26 21% 2% 109 Search POSITRON Search POSITRON
9 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY 25 39% 1% 51 Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY
10 POSITRON ANNIHILATION SPECTROSCOPY 25 28% 1% 75 Search POSITRON+ANNIHILATION+SPECTROSCOPY Search POSITRON+ANNIHILATION+SPECTROSCOPY

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 NUMERICAL LAPLACE INVERSION 128 88% 1% 60
2 ANNIHILATION 119 16% 13% 700
3 ANNIHILATION LIFETIME 90 71% 1% 72
4 LIFETIME SPECTROSCOPY 76 49% 2% 112
5 ANNIHILATION SPECTROSCOPY 63 59% 1% 72
6 REEMISSION MICROSCOPE 51 91% 0% 21
7 LIFETIME SPECTRA 50 56% 1% 61
8 HOLE SIZE DISTRIBUTION 45 94% 0% 16
9 MONOENERGETIC POSITRONS 44 78% 1% 29
10 POSITRON ANNIHILATION 41 16% 5% 238

Journals

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
Positron annihilation - A probe for nanoscale voids and free volume? 1997 174 56 88%
THEORY OF POSITRONS IN SOLIDS AND ON SOLID-SURFACES 1994 598 183 61%
INTERACTION OF POSITRON BEAMS WITH SURFACES, THIN-FILMS, AND INTERFACES 1988 1090 188 88%
Positron annihilation as a method to characterize porous materials 2006 109 45 69%
CHARACTERIZATION OF DEFECTS IN SI AND SIO2-SI USING POSITRONS 1994 241 138 60%
Free volume and mass transport in polymer nanocomposites 2012 27 49 39%
Mesoporous materials for antihydrogen production 2013 7 45 60%
Positron annihilation in fine-grained materials and fine powders-an application to the sintering of metal powders 1999 46 26 73%
Temperature dependence of free volume in pure and silica-filled poly(dimethyl siloxane) from positron lifetime and PVT experiments 2005 31 72 68%
Isotropic pressure-densified atactic poly(methyl methacrylate) glasses: Free-volume properties from equation-of-state data and positron annihilation lifetime spectroscopy 2000 51 46 52%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 AUSSENSTELLE HALLE 31 92% 0.2% 12
2 NUCL METHODS 23 69% 0.4% 20
3 RCNT 21 78% 0.3% 14
4 RCNST 15 82% 0.2% 9
5 PHYS E 21 13 80% 0.2% 8
6 BRANCH OFF HALLE 12 86% 0.1% 6
7 NUKL FESTKORPERPHYS 11 24% 0.8% 41
8 CHIM NUCL 7 46% 0.2% 11
9 ESPE OSCOPIA ANIQUILACAO POSITRON 6 100% 0.1% 4
10 OARAI BRANCH 6 19% 0.5% 26

Related classes at same level (level 2)


Rank Relatedness score Related classes
1 0.0000021437 ELECTRON MOMENTUM DENSITY//COMPTON PROFILE//COMPTON SCATTERING
2 0.0000018195 PHYSICAL AGING//L OM//TNM MODEL
3 0.0000015480 MUON CATALYZED FUSION//MUONIC MOLECULE//DEBYE PLASMAS
4 0.0000009031 AEROSP PHYS OPT//NOBLE LIQUID DETECTORS SCINTILLATION IONIZATION DOUBLE PHASE//TIME PROJECTION CHAMBERS
5 0.0000008383 JOURNAL OF NUCLEAR MATERIALS//NUCL MAT SCI//OXIDE DISPERSION STRENGTHENED STEEL
6 0.0000007471 SWAMP//OXYGEN PRECIPITATION//GROWN IN DEFECT
7 0.0000007082 EL2//NONIONIZING ENERGY LOSS NIEL//DX CENTERS
8 0.0000006528 CAPACITIVE DEPENDENT CRYSTAL//OFC MAGNETOMETER//TIN PEST
9 0.0000006295 EXFOLIATION CORROSION//ALUMINUM ALLOYS//AL ZN MG CU ALLOY
10 0.0000005972 MUONIUM//MUONIUM FORMATION//LOW ENERGY MUONS