Thermoluminescence of simulated interstellar matter after gamma-ray irradiation

Koike, Kazuto; Nakagawa, Masuo; Koike, C.; Okada, M.; Chihara, H.

doi:10.1051/0004-6361:20020653

Cited by 17 publications

(21 citation statements)

References 11 publications

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“…It comes from dense regions of the interstellar medium, like the Red Rectangle. Ledoux et al (2001) have explored laboratory photoluminescence of silicon nanoparticles as a promising candidate, while Koike et al (2002) prefer thermoluminescence from silicates like forsterite irradiated by cosmic rays. Crystalline silicates are optically anisotropic (Suto et al 2002).…”

Section: Dust and Ashesmentioning

confidence: 99%

Astrophysics in 2002

Trimble

Aschwanden

2003

PUBL ASTRON SOC PAC

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ABSTRACT. This has been the Year of the Baryon. Some low temperature ones were seen at high redshift, some high temperature ones were seen at low redshift, and some cooling ones were (probably) reheated. Astronomers saw the back of the Sun (which is also made of baryons), a possible solution to the problem of ejection of material by Type II supernovae (in which neutrinos push out baryons), the production of R Coronae Borealis stars (previously-owned baryons), and perhaps found the missing satellite galaxies (whose failing is that they have no baryons). A few questions were left unanswered for next year, and an attempt is made to discuss these as well.

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Section: Dust and Ashesmentioning

confidence: 99%

Astrophysics in 2002

Trimble

Aschwanden

2003

PUBL ASTRON SOC PAC

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“…Recently, we have suggested that thermoluminescence spectra of forsterite after y-ray irradiation are very similar to the ERE of the Red Rectangle nebula (Koike et al, 2002). In this paper, we will investigate this possibility in more detail.…”

Section: Introductionmentioning

confidence: 86%

“…This feature is common to all bulk samples and powder ones. In addition, in the case of bulk samples, other weak peaks at 590, 595, and 705 nm also appeared (Koike et al, 2002).…”

Section: Luminescence Of Forsterite and Enstatitementioning

confidence: 92%

“…We have suggested, on the basis of the measurement of thermoluminescence for irradiated silicates and carbonates, our thennoluminescence spectra of forsterite at 645-655 nm and at 590 nm are very similar to the ERE of the Red Rectangle nebula (Koike et al, 2002). The spectra were, however, obtained only from bulk samples offorsterite, and not compared with other silicates such as quartz in general.…”

Section: Introductionmentioning

confidence: 99%

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Thermoluminescence of forsterite and fused quartz as a candidate for the extended red emission

Koike

Chihara

Koike

et al. 2002

Meteorit & Planetary Scien

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Abstract-We investigated thermoluminescence of silicates that are of interest in the interstellar and circumstellar medium after irradiation by y-rays and fast neutrons. The silicates are forsterite, orthoenstatite, olivine, quartz, and crystalline silicon. The irradiated enstatite shows weak and broad peaks at 545 and 760 nm. In contrast, irradiated bulk and powder samples offorsterite show strong and broad peaks at 640-660 nm. Although thermoluminescence of bulk forsterite is very similar to the extended red emission (ERE) of the Red Rectangle nebula, irradiated powdered forsterite did not reveal any sharp emission features over the broad band. Further, we investigated the possibility of thermoluminescence of crystalline silicon and found that luminescence scarcely appears. It is emphasized that the prominent carrier of ERE is forsterite and fused quartz.

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“…Many candidates for the carrier have been proposed, for example, polycyclic aromatic hydrocarbons (d 'Hendecourt et al 1986, PAHs), quenched carbonaceous composite (Sakata et al 1992, QCC), hydrogenated amorphous carbon (Furton & Witt 1992, HAC), carbon clusters (Seahra & Duley 1999), crystalline silicon nanoparticles (Ledoux et al 2001), nanodiamonds (Chang et al 2006), and doubly ionized PAH ions (divalent cations) . Koike et al (2002) have also suggested that the ERE is caused by thermoluminescence of silicates. Ledoux et al (1998Ledoux et al ( , 2001 showed that crystalline silicon nanoparticles have a high-PL quantum yield compared with other candidate materials and that the PL quantum yield is a very significant physical constraint for candidate materials.…”

Section: Introductionmentioning

confidence: 99%

On the Carrier of the Extended Red Emission and Blue Luminescence

Wada¹,

Mizutani²,

Narisawa³

et al. 2008

ApJ

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Filmy-QCC, an organic material synthesized in the laboratory, exhibits red photoluminescence (PL). The peak wavelength of the PL ranges from 650 to 690 nm, depending on the mass distribution of polycyclic aromatic hydrocarbon (PAH) molecules, and the emission profile is a good match for that of the extended red emission (ERE) in the Red Rectangle (RR) nebula. The quantum yield of the PL ranges from 0.009 to 0.04. When filmy-QCC is dissolved in cyclohexane, it exhibits blue PL in the wavelength range of 400-500 nm with a quantum yield of 0.12-0.16. The large width of the red PL and the large wavelength difference between the PL of the filmy-QCC as a solid film and in a solution indicate that there is a strong interaction between the components of filmy-QCC. The major components of filmy-QCC are PAHs up to 500 amu. Our laboratory data suggest that the blue luminescence observed in the RR nebula is probably caused by small PAHs in a gaseous state, and the ERE is caused by larger PAHs in dust grains.

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Thermoluminescence of simulated interstellar matter after gamma-ray irradiation

Cited by 17 publications

References 11 publications

Astrophysics in 2002

Astrophysics in 2002

Thermoluminescence of forsterite and fused quartz as a candidate for the extended red emission

On the Carrier of the Extended Red Emission and Blue Luminescence

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