Laser Ablation Cleaning Effects on Thermoluminescence Dating Technique
نویسندگان
چکیده
منابع مشابه
Study of laser ablation using nano-second laser pulses
In this paper, the laser ablation process based on the irradiation of nanosecond pulsed lasers on a copper target surface in the presence of Helium gas is studied. The dynamical behaviors of the generated plasma in the helium gas and evaporated copper at the atmospheric pressure are examined using a laser pulse, laser wavelength of and intensity of 7×1010W/cm2. A one-dimensional thermal model ...
متن کاملThermoluminescence of ZrSiO 4 ( zircon ) : A new dating method ?
Zircon appears to be a suitable medium for thermoluminescence (TL) dating of sediments from the Quaternary. TL of zircon results predominantly from internal irradiation, due to the relatively high internal concentrations of a-emitting U and Th. The internal dose predominates over the external one that is caused by the surrounding geological layers and cosmic rays. Measurement of the TL buildup ...
متن کاملاثر کندگی لیزری (laser ablation) توسط مکانیزم فتوترمال در پیلمرها
در طی این پایان نامه ما ابتدا ضمن بیان روند تاریخی علم پلیمرهای و فرایند ablation، مقدار راجع به کاربردهای ablation صحبت می کنیم. سپس در مورد پلیمرها و مشخصات و ویژگیهای مختلف مربوط به آنها مطالبی را ارائه می دهیم. در ادامه همراه با ارائه مدلهای گوناگون مربوط به فرایند ablation و تفاوت آنها با یکدیگر، "مدل فتوگرمایی مرتبه یکم" را به طور مفصل مورد بحث قرار می دهیم. در پایان برنامه های کامپیوتری ...
15 صفحه اولInfrared steam laser cleaning
Steam Laser Cleaning with a pulsed infrared laser source is investigated. The infrared light is tuned to the absorption maximum of water (λ= 2.94 μm, 10 ns), whereas the substrates used are transparent (glass, silicon). Thus a thin liquid water layer condensed on top of the contaminated substrate is rapidly heated. The pressure generated during the subsequent phase explosion generates a cleanin...
متن کاملOptical Near Field Effects in Surface Nanostructuring and Laser Cleaning
We present a method for directly imaging the undisturbed near field of a particle resting on a surface. A comparison with numerical computations shows good agreement with the results of our experiments. These results have important consequences for laser-assisted particle removal where field enhancement may cause local surface damage and is one of the physical key processes in this cleaning met...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Archaeological Discovery
سال: 2014
ISSN: 2331-1959,2331-1967
DOI: 10.4236/ad.2014.23007