作者: constitute 時間: 2025-3-21 23:17 作者: notification 時間: 2025-3-22 02:10
Radiative Return to the Ground State: Emission,e absorption and emission processes occur in the same luminescent center. This situation occurs when photoluminescence is studied on a luminescent center in low concentration in a non-absorbing host lattice (Fig. 1.1).作者: 不幸的人 時間: 2025-3-22 05:20 作者: Meditate 時間: 2025-3-22 09:46 作者: adipose-tissue 時間: 2025-3-22 15:25 作者: 高調(diào) 時間: 2025-3-22 18:27 作者: 1分開 時間: 2025-3-22 22:58
How Does a Luminescent Material Absorb Its Excitation Energy?,A luminescent material will only emit radiation when the excitation energy is absorbed. These absorption processes will be the subject of this chapter with stress on excitation with ultraviolet radiation. The emission process will be treated in the next chapter.作者: 全國性 時間: 2025-3-23 03:01 作者: 畏縮 時間: 2025-3-23 07:01 作者: 前面 時間: 2025-3-23 11:48
Nonradiative Transitions,iative return, i.e. a return without emission of radiation. Nonradiative processes will always compete with radiative processes. Since one of the most important requirements for a luminescent material is a high light output, it is imperative that in such a material the radiative processes have a much higher probability than the nonradiative ones.作者: Anticlimax 時間: 2025-3-23 14:41
Energy Transfer,diatively and nonradiatively, respectively. In this chapter another possibility to return to the ground state is considered, viz. by transfer of the excitation energy from the excited centre (S*) to another centre (A): . (Figs 1.3 and 1.4).作者: 對手 時間: 2025-3-23 20:59 作者: 陳腐的人 時間: 2025-3-24 00:29
Cathode-Ray Phosphors,pes, electron microscopes, etc. Cathode rays are a beam of fast electrons; the accelerating voltage in a television picture tube is high (> 10 kV). Figure 7.1 presents a schematic picture of such a tube. The electron beam can be deflected by a magnetic field.作者: 古董 時間: 2025-3-24 03:59
X-Ray Phosphors and Scintillators (Integrating Techniques),equires a powder screen, and the term scintillator when a single crystal is required. The physical processes in the luminescence of these two types of materials is, however, in principle the same and comparable to that in cathode ray phosphors (Chapter 7).作者: paleolithic 時間: 2025-3-24 08:41
SE 3 and PHASE 4. The group with normal optic nerve head was the only one included in the HYPERTENSIVE PERIOD of the disease. Borderline, Phase 1 and Phase 2 were included in the PREPERIMETRIC PERIOD, and Phase 3 and Phase 4 were included in the PERIMETRIC PERIOD of this disease. .: Confocal tomogra作者: Abduct 時間: 2025-3-24 12:12 作者: Fierce 時間: 2025-3-24 18:33 作者: 委派 時間: 2025-3-24 21:00
G. Blasse,B. C. Grabmaiering temperature and exposure time on stress thermal relaxation and the influence of compressive stress on the stress intensity factor of hole-edge cracks by high strain rate laser shock processing are also analyzed. A new type of statistical data model to describe the fatigue cracking growth with li作者: 小平面 時間: 2025-3-25 02:38 作者: 松軟無力 時間: 2025-3-25 06:18
G. Blasse,B. C. Grabmaierlso be used for vibration analysis, as shown in Section 6.7. All the techniques that have been developed show that the laser speckle effect, far from being a hindrance to the optical research worker, has become the means of ‘finger printing’ an optically rough surface so that its positional behaviou作者: agonist 時間: 2025-3-25 10:24 作者: ATOPY 時間: 2025-3-25 13:59
G. Blasse,B. C. Grabmaierastable excited states with long spontaneous lifetimes, or in the infrared region vibrational transitions between long-lived vibrational levels . For such transitions it is not the spontaneous lifetime but the finite interaction time of the molecules with the laser field which limits the spectral re作者: 溫室 時間: 2025-3-25 17:53 作者: Hypopnea 時間: 2025-3-25 21:08 作者: 發(fā)電機(jī) 時間: 2025-3-26 03:03
Book 1994ew of the multidisciplinary character of the field. Solid state physics, molecular spectroscopy, ligand field theory, inorganic chemistry, solid state and materi"als chemistry all have to be blended in the correct proportion.作者: 離開真充足 時間: 2025-3-26 07:41 作者: 五行打油詩 時間: 2025-3-26 11:50
ferent stages in correlation with their visual fields. 172 normal eyes were studied and compared as a control group. Examinations were performed with the Heidelberg Retina Tomograph (longwave: 680 nm), using the new standard reference plane. Each examination is a mean of 3 acquisitions with 5 STD lo作者: 橡子 時間: 2025-3-26 15:06
G. Blasse,B. C. Grabmaierocesses (diffusion, heat conduction, convection, turbulence, radiational energy transfer). Detailed information on these interactions is necessary to improve the efficiency of industrial processes and to reduce the formation of unwanted side products and pollutants. Interesting new possibilities in 作者: Banquet 時間: 2025-3-26 18:30
G. Blasse,B. C. Grabmaiers.Highlights applications in aeronautical turbine engine and.This book highlights the fundamentals and latest progresses in the research and applications of laser shock peening (LSP). As a novel technology for surface treatment, LSP greatly improves the resistance of metallic materials to fatigue an作者: START 時間: 2025-3-26 21:58 作者: LUT 時間: 2025-3-27 01:41 作者: Chronic 時間: 2025-3-27 05:30
G. Blasse,B. C. Grabmaierastic deformation induced by laser shock processing. In this regard, the focus is on heat-resistant steel, aluminum alloy, Ti alloys and Ni-based alloys, offering valuable scientific insights into the industrial applications of laser shock processing (LSP) technology. The book addresses various topi作者: 虛假 時間: 2025-3-27 13:14 作者: Breach 時間: 2025-3-27 14:25
G. Blasse,B. C. Grabmaierse it strongly parallels hologram interferometry, but as will be demonstrated in this chapter there are unique tasks that it can accomplish without the complication of the intermediate holographic process. In Sections 6.4 and 6.5 an outline will be given of the many ingenious ways in which laser spe作者: 騎師 時間: 2025-3-27 20:04 作者: 網(wǎng)絡(luò)添麻煩 時間: 2025-3-28 00:22 作者: 擋泥板 時間: 2025-3-28 02:19 作者: 刺耳 時間: 2025-3-28 08:32
Radiative Return to the Ground State: Emission,sibilities of returning to the ground state are considered. In this chapter we will deal with radiative return to the ground state in the case when the absorption and emission processes occur in the same luminescent center. This situation occurs when photoluminescence is studied on a luminescent cen作者: accessory 時間: 2025-3-28 12:31 作者: 使增至最大 時間: 2025-3-28 16:23 作者: 雄偉 時間: 2025-3-28 19:43
Lamp Phosphors,uss luminescent materials for several applications, viz. lighting (Chapter 6), television (Chapter 7), X-ray phosphors and scintillators (Chapters 8 and 9), and other less-general applications (Chapter 10). These chapters will be subdivided as follows:作者: APEX 時間: 2025-3-28 23:36 作者: CHARM 時間: 2025-3-29 05:52
