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Judul Color center formation in alkali haledes crystal due to N2 Laser light irradiation
Nomor Panggil T-pdf
Pengarang
Pengarang/kontributor lain
Subjek
Penerbitan 1991
Program Studi
Kata Kunci alkali halides crystal · color center formation ·  · aser light irradiation ·
 Info Lainnya
Pengarang
Sumber Pengatalogan LibUI eng rda
Tipe Konten text (rdacontent)
Tipe Media computer (rdamedia)
Tipe Carrier online resources (rdacarrier)
Deskripsi Fisik vii, 63 pages : illustration ; 30 cm
Naskah Ringkas
Lembaga Pemilik Universitas Indonesia
Lokasi Perpustakaan UI, Lantai 3
  • Ketersediaan
  • Ulasan
  • Sampul
  • Abstrak
  • Tampilan MARC
Nomor Panggil No. Barkod Ketersediaan
T-pdf 15-18-122380357 TERSEDIA
Ulasan:
Tidak ada ulasan pada koleksi ini: 20470896
ABSTRACT
Many alkali halides crystal develop new absorption bands upon exposure to ionizing radiations. the absorbing centers responsible for these bands are called "Color-Centers". De Boer 1937 was proposed a model for one of the color centers, is called the "F-Center" which consisted essentially of an electron trapped at the position a missing halogen ion (halogen ion vacancy). with the recognition of the highly mportant influence of structural imperfection or defect (Frenkel and Schottky defects) on the physical properties of alkali cyrstal it seemed clear that the imperfection were involved in the production and constitutional of the color centers.
in this experiment, the formation and decay of color centers under N2 laser light (λ=337,1 nm) irradiation has been studied on pure KBr crystal in the romm temperature using the "Oscilloscopiic Method". the F band reach maximum hights in optical density at the end of the radiation pulse. from this experiment were obtained:

the peak position of the F-band at the wavelength 620nm, or t the energy E=2,00 ev.

the half-width of the F-band however, was : W= 0,241 ev.

Decay time constant = 16,8 , and the concentration of the F center was: N = 1,6 x 10(^15) per cc.
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020
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040LibUI eng rda
041eng
049[15-18-122380357]
053[15-18-122380357]
082
090T-pdf
100Wagini R., author
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111
240
245|a Color center formation in alkali haledes crystal due to N2 Laser light irradiation |c
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260|a |b |c 1991
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300vii, 63 pages : illustration ; 30 cm
310
321
336text (rdacontent)
337computer (rdamedia)
338online resources (rdacarrier)
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490
500
502Tesis
504page 63
515
520ABSTRACT
Many alkali halides crystal develop new absorption bands upon exposure to ionizing radiations. the absorbing centers responsible for these bands are called "Color-Centers". De Boer 1937 was proposed a model for one of the color centers, is called the "F-Center" which consisted essentially of an electron trapped at the position a missing halogen ion (halogen ion vacancy). with the recognition of the highly mportant influence of structural imperfection or defect (Frenkel and Schottky defects) on the physical properties of alkali cyrstal it seemed clear that the imperfection were involved in the production and constitutional of the color centers.

in this experiment, the formation and decay of color centers under N2 laser light (λ=337,1 nm) irradiation has been studied on pure KBr crystal in the romm temperature using the "Oscilloscopiic Method". the F band reach maximum hights in optical density at the end of the radiation pulse. from this experiment were obtained:

the peak position of the F-band at the wavelength 620nm, or t the energy E=2,00 ev.

the half-width of the F-band however, was : W= 0,241 ev.

Decay time constant = 16,8 , and the concentration of the F center was: N = 1,6 x 10(^15) per cc.
533
534
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546Bahasa Inggris
590[Deposit]
650alkali
653alkali halides crystal; color center formation; ;aser light irradiation;
700M. Barmawi, supervisor; Tjia May On, supervisor
710Universitas Indonesia. Fakultas Teknik
711
850Universitas Indonesia
852Perpustakaan UI, Lantai 3
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903[]