Class information for:
Level 2: SCANDATE CATHODE//DISPENSER CATHODE//IMPREGNATED CATHODES

Basic class information
Class id #P Avg. number of
references		 Database coverage
of references
3221 2032 14.5 37%


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
2 4 MATERIALS SCIENCE, MULTIDISCIPLINARY//PHYSICS, APPLIED//PHYSICS, CONDENSED MATTER 2836879
314 3       ULTRAMICROSCOPY//MICROSCOPY//JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B 39933
3221 2             SCANDATE CATHODE//DISPENSER CATHODE//IMPREGNATED CATHODES 2032
15689 1                   SCANDATE CATHODE//DISPENSER CATHODE//IMPREGNATED CATHODES 698
16154 1                   PROD DESIGN TECHNOL//CORE LENS//THIN LENS APPROXIMATION 670
18594 1                   SECOND ORDER FOCUSING//STATIC MASS SPECTROMETERS//ENERGY ANALYZER 545
33839 1                   LOW ENERGY RECOILS//VAPOUR SOURCE//RECOIL SPECTROMETER 119

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 SCANDATE CATHODE authKW 451232 2% 97% 31
2 DISPENSER CATHODE authKW 264938 1% 77% 23
3 IMPREGNATED CATHODES authKW 256222 1% 95% 18
4 OXIDE CATHODE authKW 221896 1% 62% 24
5 CATHODE LIFE authKW 151505 1% 92% 11
6 THERMIONIC CATHODE authKW 137362 1% 57% 16
7 LA2O3 MO authKW 90153 0% 100% 6
8 OXIDE COATED CATHODE authKW 90153 0% 100% 6
9 THERMIONIC EMISSION authKW 75530 2% 13% 40
10 SECOND ORDER FOCUSING authKW 75127 0% 100% 5

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, Applied 9643 45% 0% 908
2 Instruments & Instrumentation 8290 20% 0% 416
3 Spectroscopy 5283 14% 0% 293
4 Materials Science, Coatings & Films 4458 11% 0% 224
5 Microscopy 3629 5% 0% 95
6 Nuclear Science & Technology 2838 12% 0% 235
7 Physics, Nuclear 1716 9% 0% 190
8 Physics, Particles & Fields 1063 8% 0% 170
9 Engineering, Electrical & Electronic 815 14% 0% 285
10 COMPUTER APPLICATIONS & CYBERNETICS 805 1% 0% 12

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 PROD DESIGN TECHNOL 61348 0% 58% 7
2 RD MICROWAVE DEVICE TECHNOL 40065 0% 67% 4
3 CATHODE ELECT 30051 0% 100% 2
4 CONSUMER IND 30051 0% 100% 2
5 ELECT DEVICES MAT 28889 0% 38% 5
6 ELE ON TUBES DEVICES 24036 0% 40% 4
7 MICROWAVE TUBE RD 20033 0% 67% 2
8 ADV FUNCT MAT 17137 1% 4% 29
9 ALTERNAT ENERGY MAT SECT 15025 0% 100% 1
10 ATOM IS ELE ON SPECT 15025 0% 100% 1

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 ZHURNAL TEKHNICHESKOI FIZIKI 47004 7% 2% 138
2 OPTIK 19317 6% 1% 117
3 APPLICATIONS OF SURFACE SCIENCE 18117 1% 5% 25
4 APPLIED SURFACE SCIENCE 11640 8% 0% 166
5 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 9814 8% 0% 166
6 JOURNAL OF PHYSICS E-SCIENTIFIC INSTRUMENTS 8922 2% 2% 37
7 ADVANCES IN IMAGING AND ELECTRON PHYSICS 8915 1% 4% 15
8 REVIEW OF SCIENTIFIC INSTRUMENTS 7758 6% 0% 126
9 PROCEEDINGS OF THE SID 7704 1% 4% 12
10 JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA 7270 3% 1% 54

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 SCANDATE CATHODE 451232 2% 97% 31 Search SCANDATE+CATHODE Search SCANDATE+CATHODE
2 DISPENSER CATHODE 264938 1% 77% 23 Search DISPENSER+CATHODE Search DISPENSER+CATHODE
3 IMPREGNATED CATHODES 256222 1% 95% 18 Search IMPREGNATED+CATHODES Search IMPREGNATED+CATHODES
4 OXIDE CATHODE 221896 1% 62% 24 Search OXIDE+CATHODE Search OXIDE+CATHODE
5 CATHODE LIFE 151505 1% 92% 11 Search CATHODE+LIFE Search CATHODE+LIFE
6 THERMIONIC CATHODE 137362 1% 57% 16 Search THERMIONIC+CATHODE Search THERMIONIC+CATHODE
7 LA2O3 MO 90153 0% 100% 6 Search LA2O3+MO Search LA2O3+MO
8 OXIDE COATED CATHODE 90153 0% 100% 6 Search OXIDE+COATED+CATHODE Search OXIDE+COATED+CATHODE
9 THERMIONIC EMISSION 75530 2% 13% 40 Search THERMIONIC+EMISSION Search THERMIONIC+EMISSION
10 SECOND ORDER FOCUSING 75127 0% 100% 5 Search SECOND+ORDER+FOCUSING Search SECOND+ORDER+FOCUSING

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 GET'MAN, OI , SKOROKHOD, VV , (2015) STRUCTURAL ENGINEERING OF IMPREGNATED DISPENSER CATHODES.POWDER METALLURGY AND METAL CERAMICS. VOL. 53. ISSUE 11-12. P. 701 -721 29 97% 0
2 YAVOR, MI , (1998) CHARGED PARTICLE OPTICS OF SYSTEMS WITH NARROW GAPS: A PERTURBATION THEORY APPROACH.ADVANCES IN IMAGING AND ELECTRON PHYSICS, VOL 103. VOL. 103. ISSUE . P. 277 -388 41 73% 2
3 WANG, JS , CUI, YT , LIU, W , WANG, YM , YANG, F , ZHOU, F , ZHOU, ML , (2015) A STUDY OF SCANDIA-DOPED-IMPREGNATED CATHODE FABRICATED BY SPRAY DRYING METHOD.IEEE TRANSACTIONS ON ELECTRON DEVICES. VOL. 62. ISSUE 5. P. 1635 -1640 19 95% 1
4 CORTENRAAD, R , VAN DER GON, AWD , BRONGERSMA, HH , GARTNER, G , MANENSCHIJN, A , (2002) SURFACE ANALYSIS OF THERMIONIC DISPENSER CATHODES.APPLIED SURFACE SCIENCE. VOL. 191. ISSUE 1-4. P. 153-165 34 74% 18
5 WANG, YM , WANG, JS , LIU, W , ZHANG, XZ , LI, LL , (2011) EMISSION MECHANISM OF HIGH CURRENT DENSITY SCANDIA-DOPED DISPENSER CATHODES.JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B. VOL. 29. ISSUE 4. P. - 21 91% 2
6 SUZUKI, H , (1999) ELECTRON GUN SYSTEMS FOR COLOR CATHODE RAY TUBES.ADVANCES IN IMAGING AND ELECTRON PHYSICS, VOL 105. VOL. 105. ISSUE . P. 267 -404 34 79% 4
7 ZHAO, JF , LI, N , LI, J , BARNETT, LR , BANDUCCI, M , GAMZINA, D , MUNIR, ZA , LUHMANN, NC , (2011) HIGH CURRENT DENSITY AND LONG-LIFE NANOCOMPOSITE SCANDATE DISPENSER CATHODE FABRICATION.IEEE TRANSACTIONS ON ELECTRON DEVICES. VOL. 58. ISSUE 4. P. 1221 -1228 17 100% 6
8 YAVOR, M , (2009) CHARGED PARTICLES IN ELECTROMAGNETIC FIELDS.OPTICS OF CHARGED PARTICLE ANALYZERS. VOL. 157. ISSUE . P. 1 -+ 67 26% 12
9 SHUKLA, SK , SINGH, AK , SINGH, TP , SAINI, SK , POONIA, RK , RAJU, RS , BARIK, RK , (2016) STUDY AND DEVELOPMENT OF YTTRIUM-DOPED NANOSCANDATE CATHODE FOR HIGH-POWER VEDS.IEEE TRANSACTIONS ON ELECTRON DEVICES. VOL. 63. ISSUE 12. P. 4975 -4980 18 86% 0
10 YANG, F , WANG, JS , LIU, W , LIU, X , ZHOU, ML , (2015) STUDIES ON THE PRESSED YTTRIUM OXIDE-TUNGSTEN MATRIX AS A POSSIBLE DISPENSER CATHODE MATERIAL.MATERIALS CHEMISTRY AND PHYSICS. VOL. 149. ISSUE . P. 288 -294 17 85% 0

Classes with closest relation at Level 2


Rank Class id link
1 3928 CAB6//HEXABORIDES//CALCIUM HEXABORIDE
2 2587 SCANNING//BACKSCATTERED ELECTRONS//MICROSCOPY
3 720 JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B//CHEMICALLY AMPLIFIED RESIST//JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY
4 2316 SURFACE AND INTERFACE ANALYSIS//JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA//SURFACE EXCITATION
5 1060 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS//STORAGE RING//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
6 3079 VACUUM//JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A//GETTER
7 2614 ATOM PROBE TOMOGRAPHY//ATOM PROBE//FIELD EVAPORATION
8 2028 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS//PIXE//NUCLEAR MICROPROBE
9 4108 VOIGT FUNCTION//ESCAPE FACTOR//COMPLEX ERROR FUNCTION
10 1988 JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA//ELECTRON MOMENTUM SPECTROSCOPY//CORE EXCITATION

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