Class information for:
Level 1: FREE VOLUME//POSITRONIUM//POSITRON ANNIHILATION

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
2917 2037 24.3 51%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
1928 5257 POSITRON ANNIHILATION//POSITRONIUM//FREE VOLUME

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 FREE VOLUME Author keyword 61 22% 12% 248
2 POSITRONIUM Author keyword 54 31% 7% 143
3 POSITRON ANNIHILATION Author keyword 51 19% 12% 251
4 AUSSENSTELLE HALLE Address 31 92% 1% 12
5 NUCL METHODS Address 23 69% 1% 20
6 POSITRONIUM FORMATION Author keyword 17 54% 1% 22
7 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY Author keyword 16 32% 2% 42
8 RCNT Address 13 67% 1% 12
9 BRANCH OFF HALLE Address 12 86% 0% 6
10 POSITRON ANNIHILATION LIFETIME Author keyword 10 33% 1% 26

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 FREE VOLUME 61 22% 12% 248 Search FREE+VOLUME Search FREE+VOLUME
2 POSITRONIUM 54 31% 7% 143 Search POSITRONIUM Search POSITRONIUM
3 POSITRON ANNIHILATION 51 19% 12% 251 Search POSITRON+ANNIHILATION Search POSITRON+ANNIHILATION
4 POSITRONIUM FORMATION 17 54% 1% 22 Search POSITRONIUM+FORMATION Search POSITRONIUM+FORMATION
5 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY 16 32% 2% 42 Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY
6 POSITRON ANNIHILATION LIFETIME 10 33% 1% 26 Search POSITRON+ANNIHILATION+LIFETIME Search POSITRON+ANNIHILATION+LIFETIME
7 POSITRON ANNIHILATION LIFETIME SPECTROSCOPY PALS 9 41% 1% 17 Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY+PALS Search POSITRON+ANNIHILATION+LIFETIME+SPECTROSCOPY+PALS
8 SPIN EXCHANGE REACTIONS 9 83% 0% 5 Search SPIN+EXCHANGE+REACTIONS Search SPIN+EXCHANGE+REACTIONS
9 POSITRON AGE MOMENTUM CORRELATION 8 100% 0% 5 Search POSITRON+AGE+MOMENTUM+CORRELATION Search POSITRON+AGE+MOMENTUM+CORRELATION
10 ORTHO POSITRONIUM 7 53% 0% 10 Search ORTHO+POSITRONIUM Search ORTHO+POSITRONIUM

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 119 87% 3% 59
2 ANNIHILATION LIFETIME 59 61% 3% 62
3 HOLE SIZE DISTRIBUTION 45 94% 1% 16
4 BUBBLE MODEL 38 93% 1% 14
5 LIFETIME SPECTRA 37 50% 3% 54
6 FREE VOLUME 36 14% 12% 242
7 MOLECULAR SUBSTANCES 35 62% 2% 37
8 SEMICRYSTALLINE PEEK 34 93% 1% 13
9 CONTIN 34 55% 2% 42
10 CURED EPOXY POLYMERS 28 81% 1% 17

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%
Positron annihilation as a method to characterize porous materials 2006 109 45 44%
Free volume and mass transport in polymer nanocomposites 2012 27 49 39%
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%
Characterization of photodegradation of a polyurethane coating by positron annihilation spectroscopy: correlation with cross-link density 2001 11 11 64%
Positron annihilation study of the free volume changes in thermally treated polymers based on acrylate oligomers 2006 2 6 100%
Metal electron delocalization in 3d complexes estimated by positronium spin-exchange reactions 2001 2 2 100%
Methods of investigation of the free volume in polymers 2007 9 126 37%
Challenges to positron and positronium physics by materials science 1997 16 28 46%

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% 0.6% 12
2 NUCL METHODS 23 69% 1.0% 20
3 RCNT 13 67% 0.6% 12
4 BRANCH OFF HALLE 12 86% 0.3% 6
5 CHIM NUCL 7 46% 0.5% 11
6 ESPE OSCOPIA ANIQUILACAO POSITRON 6 100% 0.2% 4
7 RCNST 5 55% 0.3% 6
8 ADSORPT 5 30% 0.6% 13
9 EAU MOL ACT MACROMOL ACT 4 75% 0.1% 3
10 JAERI 2 18% 0.6% 12

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000195416 DELOCALIZED POSITRONIUM//POSITRONIUM PHONON INTERACTIONS//COMMUN INFORMAT SYST S
2 0.0000113155 POSITRON BEAM//SLOW POSITRON BEAM//POSITRON MICROSCOPE
3 0.0000094323 POSITRON ANNIHILATION//SUBSURFACE ZONES//SUBSURFACE ZONE
4 0.0000056330 HOLE FRACTION//SIMHA SOMCYNSKY THEORY//PVT BEHAVIOR
5 0.0000048255 PHYSICAL AGING//TNM MODEL//ENTHALPY RELAXATION
6 0.0000037299 GAS SEPARATION//MIXED MATRIX MEMBRANE//MIXED MATRIX MEMBRANES
7 0.0000032544 APOCAROTENALS//PROMOTING VIBRATIONS//FLUORESCENCE DECAY KINETICS
8 0.0000031072 THERMOPOROSIMETRY//DSC THERMOPOROSIMETRY//GAS ADSORPTION NITROGEN
9 0.0000030620 NANO CATCHER//POLYESTERCARBONATE//ANTIPLASTICIZATION
10 0.0000030238 ORTHOPOSITRONIUM DECAY//METHOD OF ITERATIONS//NRQED