Class information for:
Level 2: VACUUM//JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A//GETTER

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
3079 2385 14.3 38%


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
19 4 ASTRONOMY & ASTROPHYSICS//ASTROPHYSICAL JOURNAL//ASTRON 523489
472 3       FUSION ENGINEERING AND DESIGN//JOURNAL OF NUCLEAR MATERIALS//NUCLEAR SCIENCE & TECHNOLOGY 23979
3079 2             VACUUM//JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A//GETTER 2385
4923 1                   VACUUM//JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A//GETTER 1703
23699 1                   TURBOMOLECULAR PUMP//DRY SCROLL VACUUM PUMP//CIVIL AIR TRANSPORTAT MANAGEMENT 337
26673 1                   EFFUSION MOLECULAR BEAM//HIGH VACUUM CHEMICAL VAPOR DEPOSITION//ANGULAR DISTRIBUTION MODELING 248
35436 1                   STRAIGHT FIBER TYPE ARTIFICIAL MUSCLE//ATOMIC HYDROGEN BEAM//EARTH WORM PERISTALSIS 97

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 VACUUM journal 649622 29% 7% 693
2 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A journal 479972 30% 5% 727
3 GETTER authKW 243792 2% 48% 40
4 TURBOMOLECULAR PUMP authKW 199158 1% 68% 23
5 NON EVAPORABLE GETTER authKW 167268 1% 93% 14
6 NEG authKW 142474 1% 70% 16
7 SPINNING ROTOR GAUGE authKW 141797 1% 92% 12
8 VAKUUM-TECHNIK journal 125633 2% 27% 36
9 ASTEC VACUUM SCI GRP address 116373 0% 91% 10
10 VACUUM METROLOGY authKW 106674 0% 83% 10

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 Materials Science, Coatings & Films 55893 35% 1% 832
2 Physics, Applied 37200 78% 0% 1863
3 Materials Science, Multidisciplinary 4873 33% 0% 790
4 Instruments & Instrumentation 1368 8% 0% 197
5 Nuclear Science & Technology 273 4% 0% 93
6 Engineering, General 111 2% 0% 52
7 Engineering, Mechanical 91 3% 0% 70
8 Spectroscopy 59 2% 0% 49
9 Physics, Nuclear 49 2% 0% 52
10 Physics, Condensed Matter 33 4% 0% 103

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 ASTEC VACUUM SCI GRP 116373 0% 91% 10
2 SM GRP 51205 0% 100% 4
3 ASTEC 38579 1% 22% 14
4 ASTEC ACCELERATOR SCI TECHNOL 38404 0% 100% 3
5 ABT VAKUUMPHYS 25603 0% 100% 2
6 CIVIL AIR TRANSPORTAT MANAGEMENT 25603 0% 100% 2
7 HPS PROD 25603 0% 100% 2
8 LHC VACUUM GRP 25603 0% 100% 2
9 RHIC PROJECT 25603 0% 100% 2
10 SEMICOND VACUUM PHYS GRP 25603 0% 100% 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 VACUUM 649622 29% 7% 693
2 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A 479972 30% 5% 727
3 VAKUUM-TECHNIK 125633 2% 27% 36
4 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY 76327 4% 7% 84
5 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS 27311 1% 11% 19
6 METROLOGIA 7337 2% 1% 40
7 VIDE-SCIENCE TECHNIQUE ET APPLICATIONS 3809 1% 2% 12
8 MAPAN-JOURNAL OF METROLOGY SOCIETY OF INDIA 3546 0% 3% 9
9 SOLID STATE TECHNOLOGY 3306 1% 1% 22
10 MICRO 2607 0% 3% 6

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 GETTER 243792 2% 48% 40 Search GETTER Search GETTER
2 TURBOMOLECULAR PUMP 199158 1% 68% 23 Search TURBOMOLECULAR+PUMP Search TURBOMOLECULAR+PUMP
3 NON EVAPORABLE GETTER 167268 1% 93% 14 Search NON+EVAPORABLE+GETTER Search NON+EVAPORABLE+GETTER
4 NEG 142474 1% 70% 16 Search NEG Search NEG
5 SPINNING ROTOR GAUGE 141797 1% 92% 12 Search SPINNING+ROTOR+GAUGE Search SPINNING+ROTOR+GAUGE
6 VACUUM METROLOGY 106674 0% 83% 10 Search VACUUM+METROLOGY Search VACUUM+METROLOGY
7 OUTGASSING RATE 96803 0% 69% 11 Search OUTGASSING+RATE Search OUTGASSING+RATE
8 VACUUM STANDARD 89609 0% 100% 7 Search VACUUM+STANDARD Search VACUUM+STANDARD
9 VACUUM GAUGE 80113 1% 48% 13 Search VACUUM+GAUGE Search VACUUM+GAUGE
10 SPUTTER ION PUMP 78406 0% 88% 7 Search SPUTTER+ION+PUMP Search SPUTTER+ION+PUMP

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 CALCATELLI, A , (2013) THE DEVELOPMENT OF VACUUM MEASUREMENTS DOWN TO EXTREMELY HIGH VACUUM - XHV.MEASUREMENT. VOL. 46. ISSUE 2. P. 1029 -1039 39 85% 4
2 LI, DT , CHENG, YJ , LI, YW , ZHAO, L , SUN, WJ , WANG, YJ , (2017) A NUMERICAL SOLUTION OF DENSITY DISTRIBUTION FUNCTION OF WATER ADSORPTION SITES ON VACUUM TECHNICAL METAL SURFACES.VACUUM. VOL. 136. ISSUE . P. 14 -19 24 96% 0
3 MALYSHEV, OB , (2012) GAS DYNAMICS MODELLING FOR PARTICLE ACCELERATORS.VACUUM. VOL. 86. ISSUE 11. P. 1669-1681 31 76% 5
4 MAMUN, MAA , ELMUSTAFA, AA , STUTZMAN, ML , ADDERLEY, PA , POELKER, M , (2014) EFFECT OF HEAT TREATMENTS AND COATINGS ON THE OUTGASSING RATE OF STAINLESS STEEL CHAMBERS.JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A. VOL. 32. ISSUE 2. P. - 25 81% 1
5 SHARMA, RK , JAGANNATH , BHATTACHARYA, S , TOKAS, RB , BHUSHAN, KG , SEN, S , GADKARI, SC , GUPTA, SK , (2015) DEPOSITION AND IN-SITU CHARACTERIZATION OF TI-ZR-V ALLOY THIN FILMS ANNEALED AT DIFFERENT TEMPERATURES UNDER ULTRA-HIGH VACUUM CONDITIONS.JOURNAL OF ALLOYS AND COMPOUNDS. VOL. 651. ISSUE . P. 375 -381 20 95% 1
6 KENDALL, BRF , (1999) IONIZATION GAUGE ERRORS AT LOW PRESSURES.JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A. VOL. 17. ISSUE 4. P. 2041-2049 30 97% 13
7 LI, DT , JOUSTEN, K , (2003) COMPARISON OF SOME METROLOGICAL CHARACTERISTICS OF HOT AND COLD CATHODE IONISATION GAUGES.VACUUM. VOL. 70. ISSUE 4. P. 531-541 25 100% 12
8 ERJAVEC, B , SETINA, J , (2011) INVESTIGATIONS OF A METHOD FOR DETERMINING PUMPING SPEED AND SORPTION CAPACITY OF NONEVAPORABLE GETTERS BASED ON IN SITU CALIBRATED THROUGHPUT.JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A. VOL. 29. ISSUE 5. P. - 20 100% 3
9 LI, YW , CHEN, XK , JIA, YH , LIU, MZ , WANG, Z , (2014) NUMERICAL INVESTIGATION OF THREE TURBOMOLECULAR PUMP MODELS IN THE FREE MOLECULAR FLOW RANGE.VACUUM. VOL. 101. ISSUE . P. 337-344 20 91% 2
10 JOUSTEN, K , (2012) TRACEABILITY TO SI UNITS FOR VACUUM MEASUREMENT IN INDUSTRIAL APPLICATIONS.MEASUREMENT. VOL. 45. ISSUE 10. P. 2420 -2425 23 82% 1

Classes with closest relation at Level 2


Rank Class id link
1 2534 TRITIUM//FUSION SCIENCE AND TECHNOLOGY//FUSION TECHNOLOGY
2 4127 COMBINATORIAL SPUTTER COATING//DMM BASED METHOD//HAMON TRANSFERS
3 1060 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS//STORAGE RING//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
4 3221 SCANDATE CATHODE//DISPENSER CATHODE//IMPREGNATED CATHODES
5 1867 BOLTZMANN EQUATION//RAREFIED GAS//RAREFIED GAS DYNAMICS
6 2851 POLYDIACETYLENE//OPTOELECT SCI TECHNOL ANHUI PROV//DIACETYLENE
7 3530 UNDULATOR//INSERTION DEVICES//SUPERCONDUCTING UNDULATOR
8 3149 CLEANROOM//PHOTORESIST REMOVAL//MINIENVIRONMENT
9 340 FUSION ENGINEERING AND DESIGN//JOURNAL OF NUCLEAR MATERIALS//NUCLEAR SCIENCE & TECHNOLOGY
10 1792 HYDROGEN EMBRITTLEMENT//HOT DUCTILITY//DELAYED FRACTURE

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