Can negative ions be accelerated using Van de Graaff generator?
Answers from top 10 papers
More filters
Papers (10) | Insight |
---|---|
This phenomenon, which involves an active role of laser-heated electrons, comprehensively explains the formation of copious accelerated negative ions from the nano-cluster plasma. | |
Negative ions provide an excellent tool for materials processing applications. | |
19 Citations | Then by scattering the ions off from a metal surface, it is possible to form a high-energy beam of neutrals from the negative ions by using the low-energy positive component of the beam current for better charge compensation. |
We have also constructed a 100kV electrostatic accelerator designed for easier handling and lower cost operation which is dedicated to dust acceleration, because the HIT Van de Graaff accelerator is being used for ion beam experiments mainly. | |
It is shown that the helicon plasma generator is a very promising candidate to provide an intense and uniform negative ion beam sheet. | |
20 Citations | It has been found that increasing the gain band width of the voltage control circuit of a Van de Graaff accelerator greatly improves the obtainable energy resolution. |
Therefore, the reduced electric field will not easily be decreased by the generation and accumulation of negative ions. | |
This method of stabilization is general and can be used to predict stability of larger multiply charged negative atomic ions. | |
The comparison between simulations without and with consideration of negative ions reveals the importance of negative ions on the discharge development. | |
4 Citations | The results show that the behavior of the accelerated ions corresponds qualitatively to the experimental results. |
Related Questions
How can negative ions be used to improve the performance of laser-based AMS?4 answersNegative ions can be used to improve the performance of laser-based AMS by providing isobar suppression and enhancing the detection limit for certain isotopes. In AMS, negative ions are used in the injection stage to provide isobar suppression when the contaminating isobar does not form stable negative ions. This allows for the selective measurement of specific isotopes. Additionally, laser photodetachment of negative ions can be used as an additional isobaric selection filter in AMS. By selectively removing interfering isobars through laser-induced photodetachment, the background signal can be further suppressed, leading to improved detection limits for long-lived heavy radionuclides. This technique has been successfully implemented in the Vienna Environmental Research Accelerator (VERA) facility, where laser-photodetachment has been used to suppress the isobar 36S by 10 orders of magnitude, allowing for competitive measurements at low accelerator voltages.
Why negative ions electrospray are easier to form?5 answersNegative ions are easier to form in electrospray because they offer several advantages. Firstly, negative polarity in electrospray ionization (ESI) can yield lower average charge states for membrane proteins solubilized in saccharide detergents, resulting in enhanced peak resolution and reduced adduct formation. Secondly, polyprotic acids that are strongly acidic and have high hydrophobicity can give multiply charged ions in negative mode electrospray. Thirdly, ionic liquids can be used as solvents in ESI-MS, allowing the detection of charged analytes dissolved in these liquids. Lastly, the addition of certain compounds, such as m-nitrobenzyl alcohol (m-NBA), to electrospray solutions can enhance the formation of higher charge state ions in negative mode ESI. Overall, negative ions in electrospray offer improved ionization efficiencies and the ability to generate higher charge states, making them advantageous for various applications in mass spectrometry.
What are the definitions of negative feedback intervention?5 answersNegative feedback intervention refers to an approach that utilizes feedback to improve various aspects of a system. In the context of linear electronics, negative feedback is crucial for achieving device invariance and enhancing linearity in amplification. It has been found that different types of transistors have distinct characteristics, and the addition of negative feedback can promote uniformization of these properties to some extent. However, complete elimination of device dependence may not be achievable even with intense feedback. Therefore, it is important to consider device properties in linear design even when negative feedback is applied. In the field of medical education, a feedback workshop has been developed to emphasize student agency in feedback and its role in the learning process. This workshop aims to empower medical students and enhance their engagement with feedback.
Can negative ions kill coronavirus?13 answers
How many negative ions are there?9 answers
What are negative ions called?10 answers