15keV H3+離子撞擊含NH鍵或CH鍵的化合物與水混合之冰晶
產生CO、CO2與OCN-化合物的FTIR光譜分析

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姓名

游宗翰(You-zong Han) 查詢紙本館藏

畢業系所

機械工程學系

論文名稱

15keV H3+離子撞擊含NH鍵或CH鍵的化合物與水混合之冰晶產生CO、CO2與OCN-化合物的FTIR光譜分析
(15keV H3+ ion bombard the ice that include NH or OH bond chemical compound and H2O mixed, and analyze the quantity of the CO(2138cm-1)、CO2(2341cm-1) and OCN-(2165cm-1) bond that produced )

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摘要(中)

我們的行星系統，由星際間密集的分子雲(Dense molecular cloud)彼此重力相互的吸引後所形成。而星際間的密集分子雲主要是由氣體及微小晶粒(Sub-micrometer sized grain)所組成。在太空溫度如此低溫的狀態環境下氣體會附著於星際塵埃粒子的表面，形成星際冰晶。主要包含H2O、CO、CO2、CH3OH、CH4、OCN-及NH2COOH…等。這些冰晶在經過太陽風(Solar wind)的轟擊後，其演化的機制，是我們主要探討的地方。
本實驗室將模擬外太空環境，在低溫(24K)、超高真空(6 × 10-10 Torr)下，以15keV H3+離子轟擊含NH或OH鍵與水H2O相互混合之冰晶，藉由傅式紅外光譜儀(FTIR)掃瞄冰晶結冰與轟擊時的紅外光譜圖。
最後在進而分析在CO(2138 cm-1)、CO2(2341 cm-1)以及OCN-(2165 cm-1)三個位置上在含NH與OH鍵之化合物與水H2O相互混合不同比例下的生成影響。

摘要(英)

Our planetary system is composed of the collapse of dense molecular cloud, and it is attracted each other by gravity. The collapse of dense molecular cloud are composed of gases and sub-micrometer sized grains. The main composition of the interstellar solid material include H2O、 CO、CO2、CH3OH、CH4、OCN-、and NH2COOH etc,. These interstellar ice after the energetic particle bombarded that are being come from the solar wind and how evolves its interstellar ice is the main place where we probe into.
In our experiment is to utilize cryogenic technique(24 K) and ultra high vacuum(6×10-10) to simulate the environment of outer space, it use H3+ ion to bombard the ice that include NH or OH bond chemical compound and H2O mixed, and the energy as 15keV. It used FTIR to scan the frozen and infrared spectrum of the ice crystal.
Finally, analyze the quantity of the CO(2138cm-1)、CO2(2341cm-1) and OCN-(2165cm-1) bond that produced, and analyze the influence of mixing and proportion of H2O with NH and OH bond.

關鍵字(中)

★ NH鍵
★ OH鍵
★ 星際冰晶
★ 傅式紅外光譜
★ 氫離子

關鍵字(英)

★ NHbond
★ OH bond
★ FTIR
★ H3+ ion

論文目次

中文摘...............................................................................................................I
英文摘要………………………………………………………………………II
目錄.................................................................................................................. Ⅲ
圖目錄................................................................................................................Ⅵ
表目錄................................................................................................................IX
第一章序論......................................................................................................1
1-1簡介......................................................................................................1
1-2各章摘要..............................................................................................2
第二章實驗原理..............................................................................................3
2-1高能粒子..............................................................................................3
2-2紅外光譜術..........................................................................................3
2-2-1振動模式.....................................................................................4
2-2-2 麥克森干涉儀............................................................................4
2-2-3 傅立葉轉換................................................................................6
第三章實驗設備、步驟及參數.......................................................................8
3-1 實驗設備.............................................................................................8
3-1-1 離子源系統...............................................................................8
3-1-2 電磁鐵.......................................................................................9
3-1-3 傅式紅外光譜儀......................................................................10
3-2 實驗步驟.............................................................................................11
第四章實驗結果與討論...................................................................................19
4-1 光譜圖介紹..........................................................................................19
4-2 光譜分析..............................................................................................20
4-3 純冰晶光譜……..................................................................................21
4-3-1 NH3冰晶紅外光譜....................................................................21
4-3-2 CH3OH冰晶紅外光譜..............................................................22
4-4 混合冰晶光譜分析.............................................................................23
4-4-1 NH3+CH3OH (1:1) (1:6) (3:1) (6:1)冰晶紅外光譜………......23
4-4-2 CH3OH + H2O (CH3OH) (1:1) (1:6) (3:1) (6:1)冰晶紅外光譜..............................................................................................27
4-4-3 NH3 + CH3OH + H2O (1:1:1) (1:1:3) (1:1:6) (1:3:1) (1:6:1) (3:1:1) (6:1:1)冰晶紅外光譜………………………………....30
第五章總結.....................................................................................................57
5-1 結論...................................................................................................57
參考文獻...........................................................................................................60
附錄………………………………………………………..………………….62

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指導教授

李雄、李敬萱
(Lee-Shyong、Lee-chin Shuang)

審核日期

2009-7-16

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