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rzp8186

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11Â¥2010-06-09 15:53:08
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xgyanger

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subject

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13Â¥2010-06-09 17:45:29
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tina050582

ľ³æ (Ö°Òµ×÷¼Ò)

fe77021(½ð±Ò+1):лл½»Á÷ 2010-06-10 15:06:41
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14Â¥2010-06-09 18:10:36
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braveheart79

Ìú¸Ëľ³æ (СÓÐÃûÆø)

fe77021(½ð±Ò+1):лл½»Á÷ 2010-06-10 15:07:48
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15Â¥2010-06-09 19:53:43
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temedx

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

fe77021(½ð±Ò+1):лл 2010-06-10 15:08:08
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Everybodyissobusymindingotherppl'sbusiness,thattheyforgettofindtheirownhappiness.
16Â¥2010-06-10 08:33:28
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wtskjen

½ð³æ (СÓÐÃûÆø)

fe77021(½ð±Ò+1):лл 2010-06-10 15:08:50
fe77021(½ð±Ò+1):лл 2010-06-10 15:11:03
If you just start to use this s-4800 recently, please make sure that you have good beam alignment and good stigmators adjustments in the x and y directions.   These two are the most critical issues to use the Hitachi s-4800.

When you switch from the ¡°LM¡± to high magnification (no LM) the beam can shift, you need to center the beam again at high magnification.  Stigamtors and focus knobs will affect each other.  Therefore, you need to adjust them back and forth until the stigmators and focus are properly adjusted.  

If your sample does not have a charge problem (too bright or shifting the image) use higher KV to get better depth of field.   Your working distance of 8.3 mm should be OK.   Just want to remind you that you were using the upper detector only SE(U).  If you adjust everything right, the SE(M) usually gives better image.

Anyway, the beam alignment and astigmatism are the most critical procedcure to operate the s-4800 SEM.  Also, you need to make sure that your beam current is stabilized.  Cold field emission gun needs a little bit time to stabilize.   Cheer up!
17Â¥2010-06-10 09:57:09
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xflizhen520

½ð³æ (ÕýʽдÊÖ)

fe77021(½ð±Ò+1):лл 2010-06-10 15:08:56
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18Â¥2010-06-10 10:04:01
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temedx

ר¼Ò¹ËÎÊ (ÖøÃûдÊÖ)

ÒýÓûØÌû:
Originally posted by wtskjen at 2010-06-10 09:57:09:
If you just start to use this s-4800 recently, please make sure that you have good beam alignment and good stigmators adjustments in the x and y directions.   These two are the most critical issues ...

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Everybodyissobusymindingotherppl'sbusiness,thattheyforgettofindtheirownhappiness.
19Â¥2010-06-10 10:14:56
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huangdi

½ð³æ (СÓÐÃûÆø)

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20Â¥2010-06-10 11:58:47
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