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Blue and Ultra-Violet Bands of K 2

1948; IOP Publishing; Volume: 60; Issue: 5 Linguagem: Inglês

10.1088/0959-5309/60/5/304

2051-2171

Sangram Sinha,

Photonic Crystals and Applications

Bands of K2 have been photographed in absorption in the region λ 4510- λ 3940 Å in the first order of a 21-ft. concave grating with a dispersion of about 1.28 Å per mm. The bands measured fall into two systems, one lying between λ 4510 and λ 4220 Å and the other between λ 4160 and λ 3940 Å. They can be represented by the following equations: λ 4510 - λ 4220 Å: ν = 22970.0 + 60.60(u') - 0.20(u'2) - 92.64(u'') + 0.354(u''2), λ 4160 - λ 3940 Å: ν = 24627.7 + 61.60(u') - 0.90(u'2) + 0.0010(u'3) - 0.00030(u'4) - 92.64(u'') + 0.354(u''2), where u = ν + ½.