Laser experiments and projects for upper division students

Author(s):  
R. D. Bahuguna
Keyword(s):  
2021 ◽  
Vol 33 (2) ◽  
Author(s):  
B. Reitz ◽  
C. Lotz ◽  
N. Gerdes ◽  
S. Linke ◽  
E. Olsen ◽  
...  

AbstractMankind is setting to colonize space, for which the manufacturing of habitats, tools, spare parts and other infrastructure is required. Commercial manufacturing processes are already well engineered under standard conditions on Earth, which means under Earth’s gravity and atmosphere. Based on the literature review, additive manufacturing under lunar and other space gravitational conditions have only been researched to a very limited extent. Especially, additive manufacturing offers many advantages, as it can produce complex structures while saving resources. The materials used do not have to be taken along on the mission, they can even be mined and processed on-site. The Einstein-Elevator offers a unique test environment for experiments under different gravitational conditions. Laser experiments on selectively melting regolith simulant are successfully conducted under lunar gravity and microgravity. The created samples are characterized in terms of their geometry, mass and porosity. These experiments are the first additive manufacturing tests under lunar gravity worldwide.


1991 ◽  
Vol 9 (2) ◽  
pp. 493-499
Author(s):  
D. Naccache ◽  
J-L. Bourgade ◽  
P. Combis ◽  
C. J. Keane ◽  
J-P. Le Breton ◽  
...  

We present some significant results of collisional excitation X-ray laser experiments in plasmas produced by a laser. We studied the amplification in Ne- and Ni-like ions by varying both the nature and the thickness of targets, the irradiation, and the wavelength of the driving laser. Some potentially interesting scalings as a function of the atomic number of the lasing element are demonstrated in the Ne-like system. An order-of-magnitude increase in gain in the Ni-like experiments was determined.


1996 ◽  
Vol 64 (12) ◽  
pp. 1531-1531
Author(s):  
Richard N. Zare ◽  
Bertrand Spencer ◽  
Dwight S. Springer ◽  
Matthew P. Jacobson ◽  
F. Ross Hallett
Keyword(s):  

1986 ◽  
Vol 57 (8) ◽  
pp. 2195-2195
Author(s):  
R. B. Spielman ◽  
R. J. Dukart ◽  
B. A. Hammel ◽  
D. L. Hanson ◽  
M. A. Palmer
Keyword(s):  
X Ray ◽  

2001 ◽  
Vol 31 (2) ◽  
pp. 120-126 ◽  
Author(s):  
V S Zuev ◽  
A V Frantsesson
Keyword(s):  

1994 ◽  
Vol 14 (1-3) ◽  
pp. 155-160 ◽  
Author(s):  
Tatsuhisa Kato

Absorption spectra are detected for C60− and C602− produced electrolytically in solution at room temperature. Theoretical analysis of the spectrum of C60− by CNDO/S calculations gives an interpretation of the characteristic near-IR bands, the weak visible bands, and the strong bands in the UV region. The emission spectrum of C60− is a mirror image of the near-IR absorption band, and the detection of the emission reconfirms our original assignment of the absorption spectrum. The nature of the spectrum of C602− is characterized by a similar orbital picture to that of C60−. Further laser experiments of significance are proposed.


1982 ◽  
Vol 87 (6) ◽  
pp. 317-320 ◽  
Author(s):  
A. Miotello ◽  
L.F. Donàdalle Rose

2021 ◽  
Vol 9 ◽  
Author(s):  
Yumi Kaneyasu ◽  
Keiji Nagai ◽  
Marilou Cadatal-Raduban ◽  
Daniil Golovin ◽  
Satoshi Shokita ◽  
...  

Abstract Resorcinol/formaldehyde (RF) foam resin is an attractive material as a low-density target in high-power laser–plasma experiments because of its fine network structure, transparency in the visible region, and low-Z element (hydrogen, carbon, and oxygen) composition. In this study, we developed disk-shaped RF foam and deuterated RF foam targets with 40–200 μm thickness and approximately 100 mg/cm3 density having a network structure from 100 nm to a few micrometers cell size. By deuteration, the polymerization rate was drastically slowed down owing to kinetic isotope effects. These targets were used in high-power laser experiments where a megaelectronvolt proton beam was successfully generated.


1987 ◽  
Author(s):  
J. A. Caird ◽  
P. R. Staver ◽  
M. D. Shinn ◽  
H. J. Guggenheim ◽  
D. Bahnck

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