In situ gamma source radioactivity measurement in Isparta plain, Turkey

2014 ◽  
Vol 73 (7) ◽  
pp. 3159-3175 ◽  
Author(s):  
Umit Yalcin Kalyoncuoglu
2018 ◽  
Vol 142 ◽  
pp. 181-186 ◽  
Author(s):  
Yingying Zhang ◽  
Bingwei Wu ◽  
Dongyan Liu ◽  
Ying Zhang ◽  
Yan Cheng

2015 ◽  
Vol 167 (1-3) ◽  
pp. 348-352 ◽  
Author(s):  
M. Kowatari ◽  
T. Kubota ◽  
Y. Shibahara ◽  
T. Fujii ◽  
S. Fukutani ◽  
...  

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.


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