Investigation of mechanical, electrical and morphological properties of laser-irradiated lead substrate (Record no. 21829)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02316nam a22001697a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20221006164038.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 221006b ||||| |||| 00| 0 eng d |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER | |
| International Standard Book Number | hbk |
| 082 ## - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Classification number | 531.37 |
| Item number | In897 |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Student name | Rida Ahmed, |
| Class | MS Physics, |
| Session | 2016-2018 |
| Supervisor | Supervised by Dr. Naveed Ahmad |
| 245 ## - TITLE STATEMENT | |
| Title | Investigation of mechanical, electrical and morphological properties of laser-irradiated lead substrate |
| Statement of responsibility, etc | / Rida Ahmed |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Place of publication, distribution, etc | Lahore : |
| Name of publisher, distributor, etc | Divison of Science & Technology, Univeristy of Education, |
| Date of publication, distribution, etc | 2018 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | xiii, 49 p. |
| Accompanying material | CD |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | The effect of ambient environment and laser fluence has been investigated on the sputtering yield<br/>as well as surface modifications of Lead (Pb). Lead targets were exposed to Nd:YAG laser (532<br/>nm, 6 ns) at various fluences ranging from 6.4 J cm-2 to 15.4 Jcm-2. Quartz Crystal Microbalance<br/>(QCM) was employed as a tool for sputtering yield measurement of Pb under inert and reactive<br/>environment of (Ar and O2) at pressure of 200 torr. It is revealed that sputtering yield of Pb varies<br/>from 3.6 × 1013 to 13.1 × 1013 atoms/pulse is strongly dependent upon fluence and<br/>environmental conditions. The sputtering yield increases non-monotonically with increasing the<br/>laser fluence and its value is higher in case of Argon. The analysis of profilometry of ablated crater<br/>on lead surface explored by optical microscopy is well correlated with QCM measurements. The<br/>surface modifications of laser bombarded lead are investigated using Scanning Electron<br/>Microscopy (SEM). Its analysis reveals the growth of globules, droplets, and conical structures.<br/>The crater diameter as well as growth of surface structures are dependent upon the laser fluence.<br/>The X-ray diffraction (XRD) confirms that no new phases are formed. The micro hardness<br/>explored by Vickers micro hardness shows an increasing trend with increasing fluence. The higher<br/>sputtering yield of Pb in Ar as compare to O2 is observed. Surface modifications of Pb explained<br/>by SEM analysis are correlated with sputtering yield measurement. The other characterization<br/>techniques employed for crater depth measurements, structural modifications, and mechanical<br/>properties are optical microscopy, XRD analysis, and micro hardness tester. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name as entry element | Physics--Mechanical--Lead Substrate |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | Theses |
| Withdrawn status | Damaged status | Home library | Current library | Date acquired | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|
| UE-Central Library | UE-Central Library | 06.10.2022 | 531.37 In897 | TTH147 | 06.10.2022 | 06.10.2022 | Theses |
