The role of secondary defects in the loss of energy resolution of fast-neutron-irradiated HPGe gamma-ray detectors

1991 ◽  
Vol 38 (6) ◽  
pp. 1728-1735 ◽  
Author(s):  
N. Fourches ◽  
A. Huck ◽  
G. Walter
Keyword(s):  
Fast Neutron ◽  
Energy Resolution ◽  
Gamma Ray ◽  
Gamma Ray Detectors

Energy resolution of some new inorganic-scintillator gamma-ray detectors

2001 ◽  
Vol 33 (5) ◽  
pp. 521-525 ◽  
Author(s):  
C.W.E. van Eijk ◽  
P. Dorenbos ◽  
E.V.D. van Loef ◽  
K. Krämer ◽  
H.U. Güdel
Keyword(s):  
Energy Resolution ◽  
Gamma Ray ◽  
Inorganic Scintillator ◽  
Gamma Ray Detectors

scholarly journals FAST NEUTRON AND GAMMA-RAY DETECTORS FOR THE CSIRO AIR CARGO SCANNER

2007 ◽  
Author(s):  
Brian Sowerby ◽  
J. E. Eberhardt ◽  
A. J. McEwan ◽  
D. Milinkovic ◽  
V. Sharp ◽  
...  
Keyword(s):  
Fast Neutron ◽  
Gamma Ray ◽  
Air Cargo ◽  
Gamma Ray Detectors

Blood-brain barrier transport and cerebral utilization of dopa in living monkeys

1980 ◽  
Vol 238 (5) ◽  
pp. R318-R327 ◽  
Author(s):  
E. S. Garnett ◽  
G. Firnau ◽  
C. Nahmias ◽  
S. Sood ◽  
L. Belbeck
Keyword(s):  
Blood Brain Barrier ◽  
Rate Constants ◽  
Gamma Ray ◽  
Dopamine Synthesis ◽  
Brain Capillaries ◽  
Cynomolgus Monkeys ◽  
Fractional Rate ◽  
Gamma Ray Detectors ◽  
The Brain

[18F]fluoro-dopa, DL-3,4-dihydroxy-5-[18F]fluorophenylalanine, a tracer for dopa, was injected intravenously into cynomolgus monkeys anesthetized with enflurane, and the appearance of 18F in the head and the disappearance of 18F from the blood were each measured continuously for 10 min with simple gamma-ray detectors. A three-compartment explanatory model was used to derive fractional rate constants for the forward flux of L-dopa into the endothelium of the brain capillaries from the blood (1.54 +/- 0.37 min-1), the back flux of dopa and/or its metabolites to the blood from the endothelium (0.67 +/- 0.05 min-1), the formation of dopamine from dopa (0.20 +/- 0.04 min-1), and the destruction of dopamine (0.04 +/- 0.02 min-1). It was also shown that only one-fifth of the dopa that entered the endothelium was available for dopamine synthesis in neurons. It was concluded that the technique described could be extended to man and used to investigate the role of dopa and dopamine in the control of mood and locomotion.

Sign in / Sign up

Export Citation Format

Share Document