Surface Preparation and Direction Dependence of Diffuse Reflectance Infrared Fourier Transform Spectra of Wood
Surface Preparation and Direction Dependence of Diffuse Reflectance Infrared Fourier Transform Spectra of Wood
复制标题
木材的表面处理和漫反射红外傅里叶变换光谱的方向依赖性
DOI：
10.1366/0003702041959389
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发表时间：
2004
影响因子：
3.5
通讯作者：
K. Mitsui
中科院分区：
文献类型：
--
作者：
L. Tolvaj;K. Mitsui
图2所示。如图1所示，包裹体中气泡的拉曼微探针光谱，用UPLAPO 603物镜记录，环圈设置为160 mm标称基质厚度。信号也测量了冶金1003干和1003油浸物镜，如图所示。显而易见的是，经过玻璃校正的物镜在样品上的信号比干物镜强得多。来自冶金物镜的信号由于太弱而无法实时最大化，这一事实并没有真正影响图3中的结果，因为实时聚焦只使信号提高了约12 - 15%。为了确认该区域的行为，以随机顺序重复130、140和150 mm厚度的信号。在150mm设置下的浸出是可重复的。为了估计夹杂物的深度，随后用1003干物镜对其进行光学检查。焦点在矿物表面和包裹体的机械位置相差约100mm。这使得包裹体的深度在地表以下约154毫米（使用实际深度5测量深度3n的简单计算）。奇怪的是，这个值集中在图3中的双峰处。有人认为这种异常是由激光在包裹体界面处的强反射引起的。
FIG. 2. Raman microprobe spectrum of the gas bubble in the inclusion shown in Fig. 1, recorded with the UPLAPO 603 objective, with the collar set for 160 mm nominal matrix thickness. The signal was also measured with the metallurgical 1003 dry and 1003 oil immersion objectives, as noted in the figure. What is immediately apparent is that the signal with the objective corrected for glass over the sample is much stronger than that of the dry objective. The fact that the signal from the metallurgical objective could not be maximized in real time because it was too weak does not really affect the results in Fig. 3 because realtime focusing only improved the signal by about 12– 15%. The signal for the 130, 140, and 150 mm thicknesses were repeated in random sequence in order to confirm the behavior in that region. The dip at the 150 mm setting was reproducible. In order to estimate the depth of the inclusion, it was subsequently examined optically with the 1003 dry objective. The difference between the mechanical position for focus at the surface of the mineral and at the inclusion was about 100 mm. That makes the depth of the inclusion about 154 mm below the surface (using the simple calculation of real depth 5 measured depth 3 n). Curiously, this value is centered at the double peak in Fig. 3. It has been suggested by one of the reviewers that this anomaly results from the strong reflection of the laser at the interface of the inclusion.