JPS60172154A - X-ray tube - Google Patents
X-ray tubeInfo
- Publication number
- JPS60172154A JPS60172154A JP2702684A JP2702684A JPS60172154A JP S60172154 A JPS60172154 A JP S60172154A JP 2702684 A JP2702684 A JP 2702684A JP 2702684 A JP2702684 A JP 2702684A JP S60172154 A JPS60172154 A JP S60172154A
- Authority
- JP
- Japan
- Prior art keywords
- getter
- cylinder
- holder
- nonevaporated
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J35/00—X-ray tubes
- H01J35/02—Details
- H01J35/20—Selection of substances for gas fillings; Means for obtaining or maintaining the desired pressure within the tube, e.g. by gettering
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はＸＩＨ管動作時における非蒸飛ゲッタのガス吸
着能力を向上させたＸ線管に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an X-ray tube in which the gas adsorption ability of a non-evaporating getter is improved during XIH tube operation.
ＸＨ管では、＠憔と陽極の間に高圧を印加するので、通
常、沿面放電の原因となシ易いフラッシュゲッタよシも
、非蒸飛ゲッタが好んで用いられる。この非蒸飛ゲッタ
は、一般に陰極のホルダ並びにシリンダに囲まれた空間
内に配設されるが、非蒸飛ゲッタ配設位置の温度が高々
１３０°Ｃ乃至１５０°Ｃ程度に過ぎず、非蒸飛りツタ
の動作に好適な温度よシもかなシ低く、折角非蒸飛ゲッ
タを配設しであるのに十分なガス吸着効果が得らｎない
と云う問題があった。In the XH tube, since a high voltage is applied between the electrode and the anode, a non-evaporating getter is usually preferred over a flash getter, which tends to cause creeping discharge. This non-evaporable getter is generally arranged in a space surrounded by a cathode holder and a cylinder, but the temperature at the position where the non-evaporable getter is installed is only about 130°C to 150°C, and the non-evaporable getter is The temperature suitable for the operation of steamed ivy is low, and even though a non-steamed getter is provided, a sufficient gas adsorption effect cannot be obtained.
本発明の目的は、非蒸飛ゲッタの効果全向上させたＸ線
管を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an X-ray tube in which the effectiveness of a non-evaporating getter is completely improved.
上記目的を達成するために本発明においては、非蒸飛ゲ
ッタの配役位置を囲む陰極のホルダ並びにシリンダの表
面及び内面に黒化処理を施して、熱放射に対する吸収な
らびに放射能力を増大させ、Ｘ？１ｓｔ＃１ｗＪ作時に
、′電子ビームに射朶されて極めて高い温度に上昇して
いるターゲットからの熱放射に起因する前記非蒸飛ゲッ
タ配役位置の温度上昇値を従来よシも大きくさせ、非蒸
飛ゲッタのガス吸着能力が向上するようにした。In order to achieve the above object, the present invention blackens the surface and inner surface of the cathode holder and cylinder surrounding the non-evaporated getter placement position to increase the ability to absorb and emit thermal radiation. ? During the 1st #1wJ operation, the temperature rise value at the non-evaporated getter placement position caused by thermal radiation from the target, which has been exposed to the electron beam and has risen to an extremely high temperature, is increased compared to the conventional method. The vaporization getter's gas adsorption ability has been improved.
第１図は本発明−実施例概簀図、ｌＩ４２図は同実施例
の非蒸飛ゲツク取υ付は部近傍断面図で、ｌをま隘憔の
ホルダ、２は陰極シリンダ、３は回転１鍛軌のロータ、
４は回転陽極のターゲット、５は集束体、６は非蒸飛ゲ
ッタ、７はパルプである。ホルダｌ及びシリンダ２０表
向および内面には、黒色Ｃｒ嫉金等の黒化処理を施しで
ある。その結果、ｘ５ｕｏ”ｃｎ度の高温になったター
ゲット４からの熱放射を、ホルダｌ−？シリンダ２が従
来よりも良く吸収し且つ良く放射するようになって、シ
リンダ内に熱がともり、ホルダおよびシリンダの内面に
直候ｌＩ！ｉ１着ざＪ’している非蒸飛ゲッタ６および
その他のシリンダ内部に設置されている非蒸飛ゲッタ６
のｉｆを、従来の温変に比し４０〜６０°Ｃ上昇ざぜて
１７０〜２００°Ｃにすることか出来、非蒸飛ゲッタの
ガス吸着能力を向上させて、高負荷条件下におけるＸ線
管の寿命を従来の約１．３〜１．５倍に延ばすことが出
来た。したがって非蒸飛ゲッタはホルダおよびシリンダ
の内部であればどの位置でもよい。Fig. 1 is a schematic diagram of an embodiment of the present invention, and Fig. 1I42 is a sectional view of the non-evaporating bracket of the same embodiment. 1 forged-gauge rotor,
4 is a rotating anode target, 5 is a focusing body, 6 is a non-evaporated getter, and 7 is pulp. The front and inner surfaces of the holder 1 and the cylinder 20 are subjected to a blackening treatment such as black Cr metal. As a result, the holder l-? cylinder 2 absorbs and radiates heat radiation from the target 4, which has reached a high temperature of and the non-evaporated getter 6 directly attached to the inner surface of the cylinder and the non-evaporated getter 6 installed inside the other cylinders.
IF can be raised to 170-200°C, which is 40-60°C higher than that of conventional temperature change, improving the gas adsorption ability of the non-evaporating getter and reducing X-rays under high load conditions. We were able to extend the life of the tube by approximately 1.3 to 1.5 times compared to conventional methods. Therefore, the non-evaporable getter may be placed anywhere inside the holder and cylinder.
以上説明し７たように本発明によれば、極めて簡単な手
段によって、高負荷条件ＦにおけるＸＨ管の寿命を、従
来に比べて３０〜５０％も延ばすことが出来る。As explained above, according to the present invention, the life of the XH tube under the high load condition F can be extended by 30 to 50% compared to the conventional method using extremely simple means.
第１図は本発明−実施例の概要図、第２図は同実施例の
非蒸飛ゲッタ取シ付は部近傍断面図である。
Ｉ・・・・陰極のホルダ、２・・・・＃ｉａシリンダ、
４・・・・回転陽極のターゲット、５・・・・集束体、
６・・・・非蒸飛ゲッタ。FIG. 1 is a schematic diagram of an embodiment of the present invention, and FIG. 2 is a sectional view of the non-steamed getter mounting portion of the same embodiment. I...Cathode holder, 2...#ia cylinder,
4... Rotating anode target, 5... Focusing body,
6...Non-steamed getter.
Claims (1)
の配役位置を囲む陰極のホルダ並びにシリンダの表面及
び内面に黒化処理を施し、Ｘ線管動作時に、極めて高温
に加熱されている回転陽極ターゲットからの熱放射に起
因する前記非蒸飛ゲッタ配設位置の温度上昇値が大きく
なるようにしたことｔ特徴とするＸ線管。X-ray with built-in non-evaporation getter? In this method, blackening treatment is applied to the surface and inner surface of the cathode holder and cylinder surrounding the getter placement position, and the blackening treatment is applied to the surface and inner surface of the cylinder to prevent the above-mentioned problems caused by heat radiation from the rotating anode target which is heated to an extremely high temperature during the operation of the X-ray tube. An X-ray tube characterized in that a temperature rise value at a position where a non-evaporating getter is provided is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2702684A JPS60172154A (en) | 1984-02-17 | 1984-02-17 | X-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2702684A JPS60172154A (en) | 1984-02-17 | 1984-02-17 | X-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60172154A true JPS60172154A (en) | 1985-09-05 |
Family
ID=12209561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2702684A Pending JPS60172154A (en) | 1984-02-17 | 1984-02-17 | X-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60172154A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0726592A1 (en) * | 1995-02-09 | 1996-08-14 | Picker International, Inc. | X-ray tube having a getter shield and method |
| EP1028450A1 (en) * | 1999-02-11 | 2000-08-16 | Marconi Medical Systems, Inc. | Getter for use in evacuated tube envelopes |
-
1984
- 1984-02-17 JP JP2702684A patent/JPS60172154A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0726592A1 (en) * | 1995-02-09 | 1996-08-14 | Picker International, Inc. | X-ray tube having a getter shield and method |
| EP1028450A1 (en) * | 1999-02-11 | 2000-08-16 | Marconi Medical Systems, Inc. | Getter for use in evacuated tube envelopes |
| US6192106B1 (en) | 1999-02-11 | 2001-02-20 | Picker International, Inc. | Field service flashable getter for x-ray tubes |
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