Silicon Investor (SI) -- The First Internet Community

STOCKTALK

We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor. We ask that you disable ad blocking while on Silicon Investor in the best interests of our community. If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.

Technology Stocks : JMAR Technologies(JMAR) -- Ignore unavailable to you. Want to Upgrade?

To: timwa who wrote (6590)	9/9/1998 6:50:00 PM
From: X-Ray Man	Respond to of 9695

Little. As JMAR is currently doing point source, the advantage is their laser technology and its potential scalability. I don't like their current use of a solid target, but they are already aware of recent research on using liquid droplet targets. These, IMHO, have far better control of source size, efficiency, spectrum, and density profile than any of the current pinched plasma sources (at least that I am aware of from the literature). The plasma source is, of course the other leading contender. But I think that JMAR right now is the only company trying to attempt full system integration under government contract, although I heard recently that there will be an attempt to test a commercial x-ray stepper on a pinched plasma soon. I think JMAR has been using older horizontal stepper from Hampshire for all of their work until now.

To: timwa who wrote (6590)	9/10/1998 12:05:00 AM
From: Dick Martin	Read Replies (1) \| Respond to of 9695

Here is some comparative info on x-ray point sources: engr.orst.edu 4.2 X-ray Sources The simplest source for x-rays is the x-ray tube. The x-ray are emitted from the metal taget by focused, high energy electrons. The basic x-ray stationary anode tube is very inefficent. As can be seen in Figure 4.2 and Table 4.2 [18], other sources of x-ray lithography include rotary anode, laser plasma, discharge plasma, and a storage ring (synchotron radiation). Although the rotary anode delivers higher power for a short while, pitfalls include complexity, cost, and spot size. Laser plasma sources have a slightly higher input power than the first two, smaller source diameter, smaller prenumra, and a small percentage of hard x-rays. Using the discharge plasma source, there is a great increase in input power, soft x-ray power, resist flux, and throughput. Storage ring x-ray source is considered because its radiation is highly collimated and the prenumbra is an order of magnitude smaller than the other sources. [18] I suspect that because JMAR is building a point source that uses a number of Brightlight lasers there would be some loss of quality of the point source due to difficulties in focusing them all on the same spot. I think I read on another site that Sanders has a working relationship with SUSS which raises a question I have about JMAR. Why does not JMAR have a commercial partner The government (DARPA) is fine for research but they are not business people and their delays red tape are putting JMAR behind. In any case the synchrotron (storage ring) system seems to be the overall best choice but the discharge plasma may be good enough for the next few generations of circuits, is this system more expensive or cheaper than the JMAR point source? Dick Martin