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標(biāo)準(zhǔn)Denka M-3型六硼化鑭燈絲Standard Denka Model 3 LaB6 Cathodes，在SEM、TEM、X-Ray、Electron Beam Lithography等領(lǐng)域應(yīng)用，六硼化鑭都是最佳的陰極材料。
特征：
l 低干擾
l 熔點(diǎn)高、熱穩(wěn)定性好
l 低蒸發(fā)壓，減少材料損失
l 化學(xué)性質(zhì)穩(wěn)定
l 亮度高，10倍于鎢絲亮度，Denka M-3初始亮度值1 x 106 A/cm2。
l 壽命長(zhǎng)，溫度和真空決定燈絲的使用壽命。在1550°C和 10-7 Torr時(shí)，M-3的使用壽命在500小時(shí)。
l 安裝方便
標(biāo)準(zhǔn)燈絲一般有三種形狀：
l 標(biāo)準(zhǔn)尖Standard Tips，也即90°圓錐體/圓尖，，半徑15µ。
l 平尖Flat (Truncated) Tips，圓錐體截去頂端。平尖是優(yōu)先選擇的，穩(wěn)定性和使用壽命是我們的主要考慮因素，亮度有時(shí)需要做出一點(diǎn)犧牲。平尖有兩種角度的椎體90°和60°，多種半徑尺寸可供選擇。
l 尖尖Sharp Tips，也即60°圓錐體/圓尖，半徑有5µ和10µ，當(dāng)需要很高的初始亮度而使用壽命暫不考慮時(shí)，尖尖就是最佳選擇。
性能參數(shù)：
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標(biāo)準(zhǔn)尖Standard Tips |
平尖Flat Tips |
尖尖Sharp Tips |
|
Brightness |
About 10 times that of tungsten, |
About 5 times that of tungsten, |
Twice as bright as standard tips |
|
Saturation |
Mono spot at about 1,500°C. |
Mono spot at about 1,400°C |
Almost the same as standard tips |
|
Crossover |
Small (7-10µ) |
Large (11-13µ) |
Small (7-10µ) |
|
Angular distribution |
Sharp1.6 x10-2 rad |
Broad, 3.3-4.2x10-2 rad |
Sharp1.6 x10-2 rad |
|
Used Temperature |
Low temperature |
Low temperature |
High temperature. |
|
Lifetime |
Long life but shorter than flat tips. |
Long life; usable at low temperatures and crystallized end changes slowly. |
Short |
|
Operation |
Not so difficult. |
Easy; thanks to its large spot size and broad adjusting range. |
Difficult; Point adjustment needed! |
|
Stability |
High |
High; vulnerable to thermal expansion or vibration. |
Middle;. Vulnerable to the thermal expansion or vibration. Adjustment is sometimes necessary. |
|
Technology Needed |
High |
Ordinary |
Very high |
訂購(gòu)信息：
|
貨號(hào) |
產(chǎn)品描述 |
規(guī)格 |
|
80900-05 |
Denka M-3 LaB6 Standard for JEOL 60-5UM |
個(gè) |
|
80900-10 |
Denka M-3 LaB6 Standard for JEOL 60-10UM |
個(gè) |
|
80900-11 |
Denka M-3 LaB6 Standard for JEOL 90-20UM |
個(gè) |
|
80900-20 |
Denka M-3 LaB6 Standard for JEOL 60-20UM |
個(gè) |
|
80900-21 |
Denka M-3 LaB6 Standard for JEOL 90-21UM |
個(gè) |
|
80900-40 |
Denka M-3 LaB6 Standard for JEOL 60--40UM |
個(gè) |
|
80900-41 |
Denka M-3 LaB6 Standard for JEOL 90-41UM |
個(gè) |
|
80900-60 |
Denka M-3 LaB6 Standard for JEOL 60-60UM |
個(gè) |
|
80900-61 |
Denka M-3 LaB6 Standard for JEOL 90-60UM |
個(gè) |
|
80900-80 |
Denka M-3 LaB6 Standard for JEOL 60-80UM |
個(gè) |
|
80900-100 |
Denka M-3 LaB6 Standard for JEOL 60-100UM |
個(gè) |
|
80900-101 |
Denka M-3 LaB6 Standard for JEOL 90-100UM |
個(gè) |
|
80900-05 |
Denka M-3 LaB6 Standard for JEOL JEOL 60-5UM |
個(gè) |
|
80904-5 |
Denka M-3 LaB6 Standard for KF SHARP 60-5UM |
個(gè) |
|
80904-10 |
Denka M-3 LaB6 Standard for KF SHARP 60-10UM |
個(gè) |
|
80904-20 |
Denka M-3 LaB6 Standard for KF FLAT TIP 60-20UM |
個(gè) |
|
80904-21 |
Denka M-3 LaB6 Standard for KF FLAT TIP 90-20UM |
個(gè) |
|
80904-40 |
Denka M-3 LaB6 Standard for KF FLAT TIP 60-40UM |
個(gè) |
|
80904-41 |
Denka M-3 LaB6 Standard for KF FLAT TIP 90-40UM |
個(gè) |
|
80904-60 |
Denka M-3 LaB6 Standard for KF FLAT TIP 60-60UM |
個(gè) |
|
80904-61 |
Denka M-3 LaB6 Standard for KF FLAT TIP 90--60UM |
個(gè) |
|
80904-80 |
Denka M-3 LaB6 Standard for KF FLAT TIP 60-80UM |
個(gè) |
|
80904-81 |
Denka M-3 LaB6 Standard for KF FLAT TIP 90-80UM |
個(gè) |
|
80904-100 |
Denka M-3 LaB6 Standard for KF FLAT TIP 60-100UM |
個(gè) |
|
80904-101 |
Denka M-3 LaB6 Standard for KF FLAT TIP 90-100UM |
個(gè) |
|
80906-5 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-5UM |
個(gè) |
|
80906-10 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-10UM |
個(gè) |
|
80906-11 |
Denka M-3 LaB6 Standard for CAMBRIDGE 90-20UM |
個(gè) |
|
80906-20 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-20UM |
個(gè) |
|
80906-21 |
Denka M-3 LaB6 Standard for CAMBRIDGE 90-40UM |
個(gè) |
|
80906-40 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-40UM |
個(gè) |
|
80906-41 |
Denka M-3 LaB6 Standard for CAMBRIDGE 90-60UM |
個(gè) |
|
80906-60 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-60UM |
個(gè) |
|
80906-61 |
Denka M-3 LaB6 Standard for CAMBRIDGE 90-80UM |
個(gè) |
|
80906-80 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-80UM |
個(gè) |
|
80906-81 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-100UM |
個(gè) |
|
80906-100 |
Denka M-3 LaB6 Standard for CAMBRIDGE 60-100UM |
個(gè) |
|
80908-5 |
Denka M-3 LaB6 Standard for HITACHI 60-5UM |
個(gè) |
|
80908-10 |
DENKA M3-H2 LAB6 FOR HITACH 60-10UM |
個(gè) |
|
80908-11 |
DENKA M3-H2 LAB6 FOR HTIACHI 90-20UM |
個(gè) |
|
80908-20 |
DENKA M3-H2 LAB6 FOR HITACHI 60-20UM |
個(gè) |
|
80908-21 |
DENKA M3-H2 LAB6 FOR HITACHI 90-40UM |
個(gè) |
|
809098-40 |
DENKA M3-H2 LAB6 FOR HITACHI 60-40UM |
個(gè) |
|
80908-41 |
DENKA M3-H2 LAB6 FOR HITACHI 90-60UM |
個(gè) |
|
80908-60 |
DENKA M3-H6 LAB6 FOR HITACHI 60-60UM |
個(gè) |
|
80908-61 |
DENKA M3-H2 LAB 6 FOR HITACHI 90-60UM |
個(gè) |
|
80908-80 |
DENKA M3-H6 LAB6 FOR HITACHI 60-80UM |
個(gè) |
|
80908-81 |
DENKA M3-H2 LAB6 FOR HITACHI 90-100UM |
個(gè) |
|
80908-100 |
DENKA M3-H6 LAB6 FOR HITACHI 60-100UM |
個(gè) |
|
80908-10 |
DENKA M3-H2 LAB6 FOR HITACH 60-10UM |
個(gè) |
| 電話 010-52571502 010-51248120 郵箱 hedebio@163.com |
