Class information for:
Level 1: QUARTZ ENHANCED PHOTOACOUSTIC SPECTROSCOPY//PHOTOACOUSTIC SPECTROSCOPY//LASER PHOTOACOUSTIC SPECTROSCOPY

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
467 3       JOURNAL OF MOLECULAR SPECTROSCOPY//QUANTUM CASCADE LASER//JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER 25858
1588 2             QUANTUM CASCADE LASER//WAVELENGTH MODULATION SPECTROSCOPY//WAVELENGTH MODULATION 7455
12319 1                   QUARTZ ENHANCED PHOTOACOUSTIC SPECTROSCOPY//PHOTOACOUSTIC SPECTROSCOPY//LASER PHOTOACOUSTIC SPECTROSCOPY 945

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 QUARTZ ENHANCED PHOTOACOUSTIC SPECTROSCOPY authKW 635229 2% 95% 20
2 PHOTOACOUSTIC SPECTROSCOPY authKW 609523 11% 17% 108
3 LASER PHOTOACOUSTIC SPECTROSCOPY authKW 505492 3% 63% 24
4 QEPAS authKW 336273 1% 92% 11
5 POSTDOCTORAL MOBILE STN POWER ENGN ENGN THERMOP address 237363 1% 65% 11
6 CNR IFN UOS BARI address 222324 1% 67% 10
7 TRACE GAS DETECTION authKW 216253 2% 31% 21
8 QUARTZ TUNING FORK authKW 171961 2% 27% 19
9 RESONANT PHOTOACOUSTIC CELL authKW 171511 1% 86% 6
10 CANTILEVER MICROPHONE authKW 138955 1% 83% 5

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Optics 7571 38% 0% 355
2 Instruments & Instrumentation 4495 22% 0% 209
3 Physics, Applied 2804 36% 0% 341
4 Spectroscopy 1104 10% 0% 93
5 Chemistry, Analytical 709 13% 0% 123
6 Electrochemistry 429 6% 0% 60
7 Physics, Multidisciplinary 192 8% 0% 77
8 Thermodynamics 160 4% 0% 37
9 Acoustics 57 2% 0% 17
10 Mechanics 54 4% 0% 35

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 POSTDOCTORAL MOBILE STN POWER ENGN ENGN THERMOP 237363 1% 65% 11
2 CNR IFN UOS BARI 222324 1% 67% 10
3 CNR IFN BARI 133398 0% 100% 4
4 LASER SPECT SENSING 114986 1% 34% 10
5 GRP LASER PHYS 97467 3% 12% 24
6 LASER SPECT ENVIRONM SENSING 92633 1% 56% 5
7 DIPARTIMENTO INTERATENEO FIS 78940 3% 8% 28
8 LASERS 64181 3% 7% 26
9 CIENCIAS FIS LCFIS 44465 0% 67% 2
10 SPACE INFORMAT SIMULAT TECHNOL 44465 0% 67% 2

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 APPLIED PHYSICS B-LASERS AND OPTICS 50378 11% 1% 108
2 INFRARED PHYSICS & TECHNOLOGY 12531 3% 1% 30
3 INTERNATIONAL JOURNAL OF THERMOPHYSICS 7840 3% 1% 32
4 ROMANIAN REPORTS IN PHYSICS 5016 1% 1% 13
5 INFRARED PHYSICS 4639 1% 1% 12
6 APPLIED OPTICS 3845 7% 0% 65
7 APPLIED PHYSICS B-PHOTOPHYSICS AND LASER CHEMISTRY 3027 1% 1% 12
8 REVIEW OF SCIENTIFIC INSTRUMENTS 2434 5% 0% 48
9 APPLIED SPECTROSCOPY 2256 3% 0% 24
10 SENSORS AND ACTUATORS B-CHEMICAL 1877 4% 0% 34

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 QUARTZ ENHANCED PHOTOACOUSTIC SPECTROSCOPY 635229 2% 95% 20 Search QUARTZ+ENHANCED+PHOTOACOUSTIC+SPECTROSCOPY Search QUARTZ+ENHANCED+PHOTOACOUSTIC+SPECTROSCOPY
2 PHOTOACOUSTIC SPECTROSCOPY 609523 11% 17% 108 Search PHOTOACOUSTIC+SPECTROSCOPY Search PHOTOACOUSTIC+SPECTROSCOPY
3 LASER PHOTOACOUSTIC SPECTROSCOPY 505492 3% 63% 24 Search LASER+PHOTOACOUSTIC+SPECTROSCOPY Search LASER+PHOTOACOUSTIC+SPECTROSCOPY
4 QEPAS 336273 1% 92% 11 Search QEPAS Search QEPAS
5 TRACE GAS DETECTION 216253 2% 31% 21 Search TRACE+GAS+DETECTION Search TRACE+GAS+DETECTION
6 QUARTZ TUNING FORK 171961 2% 27% 19 Search QUARTZ+TUNING+FORK Search QUARTZ+TUNING+FORK
7 RESONANT PHOTOACOUSTIC CELL 171511 1% 86% 6 Search RESONANT+PHOTOACOUSTIC+CELL Search RESONANT+PHOTOACOUSTIC+CELL
8 CANTILEVER MICROPHONE 138955 1% 83% 5 Search CANTILEVER+MICROPHONE Search CANTILEVER+MICROPHONE
9 PHOTOACOUSTIC 138473 6% 8% 55 Search PHOTOACOUSTIC Search PHOTOACOUSTIC
10 CO2 LASER PHOTOACOUSTIC SPECTROSCOPY 133398 0% 100% 4 Search CO2+LASER+PHOTOACOUSTIC+SPECTROSCOPY Search CO2+LASER+PHOTOACOUSTIC+SPECTROSCOPY

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 1


rank cluster_id2 link
1 3305 WAVELENGTH MODULATION SPECTROSCOPY//TUNABLE DIODE LASER ABSORPTION SPECTROSCOPY//HIGH TEMP GASDYNAM
2 12731 CAVITY RING DOWN//CAVITY RING DOWN SPECTROSCOPY//FIBER LOOP RINGDOWN
3 9030 PHOTOACOUSTIC SPECTROSCOPY//PHOTOACOUSTIC//PHOTOACOUSTIC PHASE
4 38820 ANALYTICAL MODE//ANALYZERS PROC RUMENTAT//ARTIFICIAL FORMATION
5 35559 INTEGRATING CAVITY//INTEGRATING SPHERE//ABSORPTION AND SCATTERING SPECTRA
6 1174 QUANTUM CASCADE LASER//QUANTUM CASCADE LASERS QCLS//MICRO NANOSTRUCT
7 28506 SURGICAL SMOKE//SMOKE EVACUATION//SURGICAL PLUME
8 28214 MILLIMETER WAVES MMW//OUTPUT WINDOWS//PUMPED PHONONS
9 17780 ECTDL//JOURNAL OF MOLECULAR SPECTROSCOPY//LINELIST
10 2164 THERMAL EFFUSIVITY//PHOTOPYROELECTRIC TECHNIQUE//THERMAL DIFFUSIVITY

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