Compare Electron Ionization and Matrix assisted laser desorption Ionization (MALDI) ? Please answer at your own easy words. Answer should be to the point
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Compare Electron Ionization and Matrix assisted laser desorption Ionization (MALDI) ? Please answer at your own easy words. Answer should be to the point.
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- Explain the process by which an energy dispersive X-ray spectrum (EDX) spectrum is generated and the origins of the La and Ka lines for Fe in the EDX shown in Figure 3 below. Why do the Fe La lines have a lower energy than the Ka lines? By considering the energy of the X-rays measured, discuss whether EDX can be used to measure whether the iron in an iron oxide is in 2+ or 3+ valence state? Which other spectroscopy technique in the transmission electron microscope (TEM) is more appropriate and why? OK 0.01 10.00 kev Figure 3: EDX spectrum of multi-element glass (NIST K309) containing 0, Al, Si, Ca, Ba and Fe.A Kt and a Cl- ion are separated by a distance of 0.52 nm. Find the coulomb component of the binding energy at that distance. Give your answer in eV. Make sure to include the approriate sign. A positive binding energy would be the ions are unbound and a negative binding energy means they are bound. Round your answer to 2 decimal places. Add your answerIn recent years, blue light-emitting diodes (LEDs) have revolutionized various technologies, yet they are facing their challenges. Discuss the any of the major technological, material, or manufacturing challenges associated with the development and widespread implementation of blue LEDs. Evaluate the impact of the challenge(s) on the future of blue LED technology. Word limit: 300 words.
- Explain h- and p- adaptivity/refinement methods.A K* and a CI- ion are separated by 0.52 nm. Find the Coulomb component of the binding energy at that distance. Give your answer in electron-volts. (Please include the appropriate sign.) A positive binding energy would mean the ions are unbound and a negative binding energy means they are bound. Note: For this homework problem, round your answer to 2 decimal places.Emission from a particular LED has linewidth 16nm centred on the mean wavelength 561 nm. Which ONE of the following is correct? (There is only one.) (Make sure you understand the terms "coherence time" and "coherence length", and check out the similar example in Lecture 11.) Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a b с d e f The frequency bandwidth is 5.3 x 10¹4 Hz and the coherence length is tens of microns. The frequency bandwidth is 1.5 x 10¹3 Hz and the coherence time is 1 femto-second. The frequency bandwidth is 5.3 x 10¹4 Hz and the coherence length is 16 nm. The coherence length is 561 nm and the coherence time is of order 0.1 pico-seconds. The coherence length is 561 nm and the frequency is 5.3 x 10¹4 Hz. The frequency bandwidth is 1.5 x 10¹3 Hz and the coherence length is tens of microns.
- Explain, with detailed reasoning, if you agree or disagree with the following statements. (i) Rigid molecules tend to have higher fluorescence quantum yields than flexible molecules.Q/Answer the following questions: 1. What exists between two allowed energy bands ? 2. How is the energy gap formed?Discuss the advantages of using ultrahigh-field magnets in experiments in biomolecular NMR spectroscopy
- Concentrate on lead element. All isotopes are listed in the table. Isotope masses are listed in AMU (atomic mass unit) and value of AMU is given in Physical Constants section below this document together with other physical constants. An ionizing laser is directed onto the lead block under test such that the ionized atoms (or isotopes) leaves the lead block with an initial kinetic energy of 1 eV. The direction is conically upward but sure that the cone is larger than the entrance hole to the accelerator section. The ionized isotopes are in form. That is only a single electron is missing in lead ions. The number of ionized isotopes entering into the accelerator region corresponds to a ion current. These ions are accelerated with a constant DC voltage in the acceleration chamber which is in the form of two parallel metal plates that have a hole in both bottom and top. Then the ions enter to velocity selector region. In this region both electric and magnetic fields are applied. Next…46. a) Explain why a pattern of bright and dark fringes is visible on a screen when a light is shone through a double slit. b) Upon using Thomas Young's double-slit experiment to obtain measurements, the following data were obtained. Use these data to determine the wavelength of light being used to create the interference pattern. Do this in three different ways. • The angle to the eighth maximum is 1.12. • The distance from the slits to the screen is 302 cm. • The distance from the first minimum to the fifth minimum is 2.95 cm. • The distance between the slits is 0.00025 m. 47. a) Imagine that you are conducting an activity with a laser to create an interference pattern. Use the appropriate equations to predict two ways (other than the way described in the following example) to change the interference pattern in order to have closer fringes. Explain your predictions. Here's an example to get you started: According to the equation Ax= the distance between the fringes (Ax) is…Laser ablation is an effective tool for probing micro areas of solid samples. How does it work?