Class information for:
Level 2: FREE ELECTRON LASER//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT//UNDULATOR

Basic class information
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
13 4 PHYSICS, PARTICLES & FIELDS//PHYSICS, NUCLEAR//OPTICS 1062565
228 3       PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT//FREE ELECTRON LASER 48839
1890 2             FREE ELECTRON LASER//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT//UNDULATOR 6328
351 1                   FREE ELECTRON LASER//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT//SASE 3624
14570 1                   OPTICAL KLYSTRON//STORAGE RING//FREE ELECTRON LASER 790
15857 1                   UNDULATOR//INSERTION DEVICES//SUPERCONDUCTING UNDULATOR 715
24619 1                   HALBACH CYLINDER//PERMANENT MAGNET FLUX SOURCE//200 MEV PROTON BEAM 329
25035 1                   PROTON RADIOGRAPHY//EXPT GAS DYNAM PHYS EXPLOS//CHARGED PARTICLE RADIOGRAPHY 316
29052 1                   MICROTRON//COMPACT FEL//SURFACE ELECTROMAGNETIC WAVES 212
29747 1                   RACETRACK MICROTRON//ALUMINUM MODEL//ANNULAR RING COUPLED STRUCTURE 197
32923 1                   CANDOLUMINESCENCE//A FEW VIEWS TOMOGRAPHY//ACCELERATOR RECUPERATOR 145

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FREE ELECTRON LASER authKW 1263175 9% 45% 559
2 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIAT journal 666782 37% 6% 2359
3 UNDULATOR authKW 566812 3% 60% 190
4 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS journal 296055 6% 17% 356
5 SASE authKW 279332 1% 88% 64
6 FEL authKW 214174 2% 43% 101
7 PHYSICS, NUCLEAR WoSSC 169706 47% 1% 3002
8 INSERTION DEVICES authKW 153622 1% 62% 50
9 NUCLEAR SCIENCE & TECHNOLOGY WoSSC 141818 44% 1% 2753
10 SPECTROSCOPY WoSSC 130186 39% 1% 2469

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Physics, Nuclear 169706 47% 1% 3002
2 Nuclear Science & Technology 141818 44% 1% 2753
3 Spectroscopy 130186 39% 1% 2469
4 Instruments & Instrumentation 129878 45% 1% 2843
5 Physics, Particles & Fields 128151 47% 1% 2943
6 Optics 5048 13% 0% 820
7 Physics, Applied 4402 19% 0% 1222
8 Physics, Multidisciplinary 2280 10% 0% 647
9 Engineering, Electrical & Electronic 1356 11% 0% 704
10 Physics, Fluids & Plasmas 1237 4% 0% 250

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 FIS PLICATA 61788 1% 30% 42
2 FEL 46990 0% 34% 28
3 RIC FRASCATI 44171 1% 16% 54
4 PARTICLE BEAM PHYS 43071 0% 58% 15
5 DIPARTIMENTO INNOVAZ 36475 0% 24% 31
6 PARTICLE ACCELERATOR PHYS 27103 0% 78% 7
7 BUDKER NUCL PHYS 25152 1% 6% 84
8 PARTICLE PHYS LSVE 24893 0% 100% 5
9 FREE ELE ON LASER 24346 0% 19% 26
10 RIC BOLOGNA 23713 0% 53% 9

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 666782 37% 6% 2359
2 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS 296055 6% 17% 356
3 PHYSICAL REVIEW ACCELERATORS AND BEAMS 93081 1% 24% 78
4 JOURNAL OF SYNCHROTRON RADIATION 16949 2% 3% 104
5 IEEE JOURNAL OF QUANTUM ELECTRONICS 12994 2% 2% 151
6 IEEE TRANSACTIONS ON NUCLEAR SCIENCE 9476 3% 1% 182
7 CHINESE PHYSICS C 7498 1% 2% 62
8 IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY 6493 2% 1% 147
9 REVIEW OF SCIENTIFIC INSTRUMENTS 3683 2% 1% 156
10 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH 3523 1% 2% 44

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 FREE ELECTRON LASER 1263175 9% 45% 559 Search FREE+ELECTRON+LASER Search FREE+ELECTRON+LASER
2 UNDULATOR 566812 3% 60% 190 Search UNDULATOR Search UNDULATOR
3 SASE 279332 1% 88% 64 Search SASE Search SASE
4 FEL 214174 2% 43% 101 Search FEL Search FEL
5 INSERTION DEVICES 153622 1% 62% 50 Search INSERTION+DEVICES Search INSERTION+DEVICES
6 SELF AMPLIFIED SPONTANEOUS EMISSION 130104 0% 93% 28 Search SELF+AMPLIFIED+SPONTANEOUS+EMISSION Search SELF+AMPLIFIED+SPONTANEOUS+EMISSION
7 OPTICAL KLYSTRON 114705 0% 96% 24 Search OPTICAL+KLYSTRON Search OPTICAL+KLYSTRON
8 SUPERCONDUCTING UNDULATOR 94829 0% 95% 20 Search SUPERCONDUCTING+UNDULATOR Search SUPERCONDUCTING+UNDULATOR
9 STORAGE RING 81306 2% 17% 97 Search STORAGE+RING Search STORAGE+RING
10 HGHG 79658 0% 100% 16 Search HGHG Search HGHG

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.

Classes with closest relation at Level 2


rank cluster_id2 link
1 2362 CHANNELING RADIATION//SMITH PURCELL RADIATION//TRANSITION RADIATION
2 955 GYROTRON//IEEE TRANSACTIONS ON PLASMA SCIENCE//HIGH POWER MICROWAVE
3 2481 ELECT ENGN OPTOELECT TECHNOL//PHYS BIOL ULTRAFAST SCI TECHNOL//PHOTOCATHODE
4 1369 PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS//STORAGE RING//NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
5 3777 OPERATIONAL METHODS//MATRIX ORTHOGONAL POLYNOMIALS//MONOMIALITY PRINCIPLE
6 626 HIGH ORDER HARMONIC GENERATION//PHYSICAL REVIEW A//JR MACDONALD
7 1435 X RAY MICROSCOPY//X RAY OPTICS//MULTILAYER MIRROR
8 1725 ACTA CRYSTALLOGRAPHICA SECTION A//NUCLEAR RESONANT SCATTERING//JOURNAL OF APPLIED CRYSTALLOGRAPHY
9 285 PHYSICS OF PLASMAS//PHYSICS, FLUIDS & PLASMAS//JOURNAL OF PLASMA PHYSICS
10 3149 PLASMA OPENING SWITCH//SMIRNOV MATH MECH//SUPERTRONS

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