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- Adduct ions [M+NH_4]~+, protonated molecular ion [M+H]~+ and molecularion [M]~+. 觀察到較高強度的加合離子[M+NH_4]~+、質子化分子離子[M+H]~+和分子離子[M]?
- The fragmentation reaction of the adduct ion formed by orthobenzene diamine with acetyl ion was similar to the reductive alkylation reaction of amine in condensed phase. 鄰苯二胺與乙醯基離子形成的加合離子在碎裂反應過程中可以發生與液相中胺的還原烷基化反應相類似的碎裂反應。
- The application of Freeman ion source linked to LC-2A ion implanter is described in the paper. 本文敘述了弗里曼(Freeman)離子源體聯接在LC-2A型中能離子注入機上的應用;
- KEYWORDS : GIMS, ion source, anode layer, sputtering, TiN, ion plating, medium frequency, pulsed DC. 中文關鍵詞:氣離濺射、離子源、陽極層流、濺射、氮化鈦、離子鍍膜、中頻、脈衝直流。
- TITAN ion source is a new ion source which can produce strong metal and gas ion beam. Use . TITAN離子源是一種新的能夠同時產生強金屬和氣體離子束流的離子源。
- KEYWORDS: GIMS, ion source, anode layer, sputtering, TiN, ion plating , medium frequency, pulsed DC. 中文關鍵詞:氣離濺射、離子源、陽極層流、濺射、氮化鈦、離子鍍膜、中頻、脈衝直流。
- An intense ECR ion source for ADS (accelerator driven sub-critical system) is described. 介紹了正在研製的一台強流ECR離子源。
- The MC-SNICS ion source of NEC compact AMS system at the AMS laboratory of Peking University was upgraded recently. 摘要為提高樣品測量效率,對MC-SNICS多靶位銫濺射負離子源進行了升級改進。
- Electric field of the emission system of a liquid metal ion source was simulated, based on the conventional dynamic protrusion model and the widely used charge simulation method. 摘要發射系統是液態金屬離子源的關鍵部件之一,它的性能的優劣直接影響到整個離子源的工作穩定性和可靠性。
- In addition, the requirement of delivering 18O2 beams from the electron cyclotron resonance ion source can be satisfied by the obtained 18O2 gas. 此外,製得的氣體能夠滿足電子迴旋共振離子源提供18O重離子束的實驗要求。
- Then the corresponding sigma matrix is given to further estimate the beam emittance extracted from electron cyclotron resonance ion source. 用旋轉矩陣和聚焦矩陣重新推導了總的傳輸矩陣。
- Abstract The MC-SNICS ion source of NEC compact AMS system at the AMS laboratory of Peking University was upgraded recently. 摘要 為提高樣品測量效率,對MC-SNICS多靶位銫濺射負離子源進行了升級改進。
- METHODS The CID MS/MS spectra of adduct ions such as [M+H] + and [M+Na] + were measured by FAB, as well as some related characteristic ions. In addition, the high resolution data of characteristic ions were determined. 方法 利用FAB技術測定該類型 3種化合物的 [M +H]+和 [M +Na]+等不同加合離子 ,以及由其產生的特徵碎片離子的CID MS/MS譜 ,並對有關特徵離子進行了高分辨測定。
- The purpose of the first part of this work has been to use an electromagnet to improve the performance of the Kaufman ion source. 電漿的電子,離子密度與溫度是了解電離層結構的幾個重要參數,而為了量測這些參數,科學家使用了數種實地量測的技術。
- Because of the structure limitation, working state of the ECR ion source could not be judged by the color of gas discharging in discharge chamber. 由於受結構的限制,ECR離子源不能像高頻源離子源那樣通過觀察氣體放電的顏色判斷其工作狀態,所以在運行中調節狀態非常困難。
- A new electron impact storage ion source has been designed for time of flight mass spectrometers with a high mass resolving power and high sensitivity. 電子轟擊存貯型脈衝離子源是為高解析度、高靈敏度飛行時間質譜儀設計的新型離子源。
- Some key problems such as pre-bunching between the ion source and the RFQ, H-minus Lorentz stripping in the medium energy cyclotron, flat-top acceleration etc. have been studied. 對其中的一些關鍵性問題如從離子源到RFQ的預聚束問題等進行了較為深入的研究。
- Institute of Modern Physics of CAS. The main parameters of superconducting ECR hydronium ion source have reached the highest level in the world[N]. Science Times, [2006-02-14]. 近代物理研究所.;超導高電荷態ECR離子源主要性能達國際最好水平[N]
- It is this molecular motion that we call heat. 就是這種分子運動我們稱之為熱。
- Three sets of arcing tests were carried out by way of regulating three influencing parameters on the arc current of ion source for DNB(diagnostic neutral beam)system,ie. 通過調節影響診斷中性束離子源弧流的進氣量、燈絲電流和弧壓三個參量,進行了三組離子源起弧實驗。