scholarly journals Prompt Fission Yields and Total Kinetic Energy Behavior from Time-of-Flight Measurements

1961 ◽  
Vol 7 (2) ◽  
pp. 67-69 ◽  
Author(s):  
J. C. D. Milton ◽  
J. S. Fraser
Keyword(s):  
Kinetic Energy ◽  
Time Of Flight ◽  
Total Kinetic Energy ◽  
Energy Behavior ◽  
Prompt Fission ◽  
Flight Measurements ◽  
Fission Yields

scholarly journals THE MOST COMPACT SCISSION CONFIGURATION OF FRAGMENTS FROM LOW ENERGY FISSION OF 234U AND 236U

2019 ◽  
pp. 1-4
Keyword(s):  
Kinetic Energy ◽  
Ground State ◽  
Time Of Flight ◽  
Low Energy ◽  
Total Kinetic Energy ◽  
Light Fragment ◽  
Primary Mass ◽  
Palabras Clave ◽  
Cold Fission ◽  
Fragment Kinetic Energy

THE MOST COMPACT SCISSION CONFIGURATION OF FRAGMENTS FROM LOW ENERGY FISSION OF 234U AND 236U Modesto Montoya Zavaleta DOI: https://doi.org/10.33017/RevECIPeru2009.0001/ RESUMEN Usando una técnica de tiempo de vuelo, Signarbieux et al. midieron el valor máximo de la energía cinética total en función de la masa primaria de los fragmentos de la fisión de baja energía de 234U y 236U. De los cálculos de las configuraciones de escisión, puede concluirse que, para esos dos sistemas físiles, el valor máximo de la energía cinética corresponde a las fragmentaciones 42Mo62, 50Sn80 y 42Mo64, 50Sn80), respectivamente, son iguales a los valores disponibles de energía, y sus configuraciones de escisión están compuestas por un fragmento pesado esférico y un fragmento liviano prolato, ambos en sus estados fundamentales. PALABRAS CLAVE: Fisión a baja energía; 234U; 236U; energía cinética de fragmentos; fisión fría. ABSTRACT Using a time of flight technique, the maximal values of kinetic energy as a function of primary mass of fragments from low energy fission of 234U and 236U were measured by Signarbieux et al. From calculations of scission configurations, one can conclude that, for those two fissioning systems, the maximal value of total kinetic energy corresponding to fragmentations (42Mo62, 50Sn80) and (42Mo64, 50Sn80) respectively, are equal to the available energies, and their scission configurations are composed by a spherical heavy fragment and a prolate light fragment both in their ground state. Keywords: Low energy fission; 234U; 236U; fragment kinetic energy; cold fission.

scholarly journals Off-Axis Characterisation of the CERN T10 Beam for low Momentum Proton Measurements with a High Pressure Gas Time Projection Chamber

Instruments ◽  
2020 ◽  
Vol 4 (3) ◽  
pp. 21
Author(s):  
S.B. Jones ◽  
T.S. Nonnenmacher ◽  
E. Atkin ◽  
G.J. Barker ◽  
A. Basharina-Freshville ◽  
...  
Keyword(s):  
High Pressure ◽  
Kinetic Energy ◽  
Time Projection Chamber ◽  
Time Of Flight ◽  
Beam Axis ◽  
Energy Methods ◽  
Incident Flux ◽  
Flux Measurements ◽  
Time Projection ◽  
Flight Measurements

We present studies of proton fluxes in the T10 beamline at CERN. A prototype high pressure gas time projection chamber (TPC) was exposed to the beam of protons and other particles, using the 0.8 GeV/c momentum setting in T10, in order to make cross section measurements of low energy protons in argon. To explore the energy region comparable to hadrons produced by GeV-scale neutrino interactions at oscillation experiments, i.e., near 0.1 GeV of kinetic energy, methods of moderating the T10 beam were employed: the dual technique of moderating the beam with acrylic blocks and measuring scattered protons off the beam axis was used to decrease the kinetic energy of incident protons, as well as change the proton/minimum ionising particle (MIP) composition of the incident flux. Measurements of the beam properties were made using time of flight systems upstream and downstream of the TPC. The kinetic energy of protons reaching the TPC was successfully changed from ∼0.3 GeV without moderator blocks to less than 0.1 GeV with four moderator blocks (40 cm path length). The flux of both protons and MIPs off the beam axis was increased. The ratio of protons to MIPs vary as a function of the off-axis angle allowing for possible optimisation of the detector to select the type of required particles. Simulation informed by the time of flight measurements show that with four moderator blocks placed in the beamline, (5.6 ± 0.1) protons with energies below 0.1 GeV per spill traversed the active TPC region. Measurements of the beam composition and energy are presented.

High precision time-of-flight measurements of neutron resonance energies in carbon and oxygen between 3 and 30 MeV

1980 ◽  
Vol 169 (1) ◽  
pp. 185-198 ◽  
Author(s):  
S. Cierjacks ◽  
F. Hinterberger ◽  
G. Schmalz ◽  
D. Erbe ◽  
P.v. Rossen ◽  
...  
Keyword(s):  
High Precision ◽  
Time Of Flight ◽  
Neutron Resonance ◽  
Resonance Energies ◽  
Precision Time ◽  
Flight Measurements

Time-of-flight measurements of heavy ions using Si PIN diodes

2016 ◽  
Vol 79 (9-10) ◽  
pp. 1386-1390
Author(s):  
A. O. Strekalovsky ◽  
D. V. Kamanin ◽  
Yu. V. Pyatkov ◽  
N. A. Kondratyev ◽  
V. E. Zhuchko ◽  
...  
Keyword(s):  
Heavy Ions ◽  
Time Of Flight ◽  
Pin Diodes ◽  
Flight Measurements

BIMODAL FISSION IN 258FM

1986 ◽  
Vol 01 (06) ◽  
pp. 377-381 ◽  
Author(s):  
K. DEPTA ◽  
J.A. MARUHN ◽  
W. GREINER ◽  
W. SCHEID ◽  
A. SANDULESCU
Keyword(s):  
Kinetic Energy ◽  
Shell Model ◽  
Fission Products ◽  
Degree Of Freedom ◽  
Total Kinetic Energy ◽  
Heavy Nuclei ◽  
Energy Distributions ◽  
Decay Channels ◽  
Symmetric Fission ◽  
Kinetic Energy Distributions

Within the 2-center shell model we present an explanation for the mass and total-kinetic-energy distributions of fission products of very heavy nuclei called “bimodal fission.” For the case of 258 FM we show that the symmetric fission can be described by a 2-dimensional treatment of the elongation and neck degree of freedom. Owing to shell corrections the system fissions via two decay channels that have distinct kinetic energies.

Time-of-flight measurements of the kinetic energies of the O2(a1Δg) fragment from the photolysis of ozone between 287 and 331 nm

1995 ◽  
Vol 245 (1) ◽  
pp. 1-6 ◽  
Author(s):  
Stephen M. Ball ◽  
Gus Hancock ◽  
John C. Pinot de Moira ◽  
Chester M. Sadowski ◽  
Fiona Winterbottom
Keyword(s):  
Time Of Flight ◽  
Flight Measurements

The Suppression of Flow Separation by Sequential Wall Jets

1976 ◽  
Vol 98 (3) ◽  
pp. 447-452
Author(s):  
P. North
Keyword(s):  
Boundary Layer ◽  
Fluid Flow ◽  
Kinetic Energy ◽  
Energy Flux ◽  
Close Agreement ◽  
Total Kinetic Energy ◽  
Wall Jet ◽  
Wall Jets ◽  
Single Jet ◽  
Flow Devices

The performance of many fluid flow devices is limited by the separation of the turbulent boundary layer. This separation may be suppressed or delayed by use of wall jets, raising questions of jet location and strength. A numerical analysis of a single wall jet gave results in close agreement with experiment. The same analysis of a single wall jet gave results in close agreement with experiment. The same calculation procedure indicated that two sequential wall jets, with the same total kinetic energy flux as the single jet, would suppress separation under conditions where the single jet would not. The best two-jet arrangement would be achieved with 63 percent of the total kinetic energy flux in the first jet. It is possible that three-jet arrangements could provide some further improvement.

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