• Aucun résultat trouvé

Developmental Electron Optics Laboratory

N/A
N/A
Info
Télécharger
Protected

Academic year: 2021

Partager "Developmental Electron Optics Laboratory"

Copied!
2
0
0

Chargement.... (Voir le texte intégral maintenant)

Texte intégral

(1)

II. DEVELOPMENTAL ELECTRON OPTICS LABORATORY

Academic and Research Staff Dr. John W. Coleman

Graduate Students Michael R. Graham

1. ULTRAHIGH-SENSITIVITY ELECTRON OPTICAL DETERMINATION AND LOCATION OF IMPURITY ATOMS IN Si AND GaAs

Joint Services Electronics Program (Contract DAAB07-76-C-1400) John W. Coleman

During the past year we have used specimens of gold-on-carbon substrates to cali-brate our instrumentation. We have obtained images of these specimens due to

second-ary electrons, and at present we are trying to photograph them. We also have specimens on hand of Si-A1 on Si, Si-A on Ta, and P glass on Si. A chronic major problem has been vacuum, which has precluded until now the predominant usage of Auger electrons

for producing the images. Plans are now under way to change over to an oil-free sys-tem; when this is complete, we will be able not only to produce Augers but also to install our channeltron-array image intensifier, which will help us to see and photograph the low-level intensity images.

(2)

Références

Télécharger maintenant ( PDF - 2 Page - 38.25 KB )

Documents relatifs

Do We Have What Is Needed to Change Everything?

In this study, we use a data (n=160) from a survey to the Finnish software businesses to evaluate how software companies perceive the labour shortage and its implications in the

E-university - what have we learned?

Therefore, we learn from this that the appropriate balance is to offer collaborative learning as a support at the beginning of the course and then reduce it towards the end, as

View of Meeting the challenges of adolescent literacy: Research we have, research we need

there is a great need for more purposeful quantitative and qualitative research on effective classroom adolescent literacy practices-research that informs teachers about the kind

Actinic flux and photolysis in water droplets: Mie calculations and geometrical optics limit

Consequently, the enhancement of the actinic flux inside a droplet is the ratio of energy densities inside and outside the droplet divided by the refractive index of the medium..

Rapport annuel 1971-1972 - CSE

Le Conseil est composé de vingt-quatre membres dont au moins seize sont de foi catholique, au moins quatre de foi protestante et au moins un qui n’est ni catholique, ni

we have T=y+T2

A Lyndon word is a word which is the strict minimum (for ⪯ lex , hence the alphabet must have been totally ordered) of its conjugacy class. In an equivalent way we set

«Do we need to be educated to have Green concerns?»

We study the effect of various determinants like socio demographic factors on these seven concerns: age, gender, highest diploma obtained by an individual,

We have estimated the following equation:

Holding meduc and f educ xed, by how much does sibs have to increase to reduce expected years of education by one year?. (A noninteger answer is acceptable