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K-shell x-ray production cross sections of selected elements from Ti to Y for 0.5- to 2.5-MeV alpha-particle bombardment
This article discusses K-shell x-ray production cross sections of Ti, V, Cr, Fe, Ni, Cu, Zn, Ga, As, Se, Rb, Sr, and Y for 0.5- to 2.5-MeV alpha particles.
Date:
May 1975
Creator:
McDaniel, Floyd Del. (Floyd Delbert), 1942-; Gray, Tom J. & Gardner, R. K.
Object Type:
Article
System:
The UNT Digital Library
L-shell x-ray production cross sections for light ions on Sm, Yb, and Pb
This article discusses L-shell x-ray production cross sections for light ions on Sm, Yb, and Pb.
Date:
December 1975
Creator:
Gray, Tom J.; Light, G. M.; Gardner, R. K. & McDaniel, Floyd Del. (Floyd Delbert), 1942-
Object Type:
Article
System:
The UNT Digital Library
Projectile-charge-state dependence of target L-shell ionization by 1.86-MeV/amu fluorine and silicon ions and 1.8-MeV/amu chlorine ions
This article discusses projectile-charge-state dependence of target L-shell ionization by 1.86-MeV/amu and silicon ions and 1.8-MeV/amu chlorine ions.
Date:
April 1979
Creator:
McDaniel, Floyd Del. (Floyd Delbert), 1942-; Toten, R. S.; Peterson, J. L.; Duggan, Jerome L.; Wilson, Scott R.; Gressett, J. D. et al.
Object Type:
Article
System:
The UNT Digital Library
K-shell x rays of selected elements from Nb through Gd for incident protons and alpha particles from 0.6 to 2.4 MeV
This article discusses K-shell x-rays of selected elements from Nb through Gd for incident protons and alpha particles from 0.6 to 2.4 MeV.
Date:
September 1977
Creator:
Wilson, Scott R.; McDaniel, Floyd Del. (Floyd Delbert), 1942-; Rowe, J. R. & Duggan, Jerome L.
Object Type:
Article
System:
The UNT Digital Library
M-shell x-ray production cross sections in thin targets of ₇₉Au, ₈₂Pb, ₈₃Bi, and ₉₂U by 0.3 - 2.6-MeV ₁¹H+ and ₂⁴He+ ions
Article discussing M-shell x-ray-production cross sections in thin targets of ₇₉Au, ₈₂Pb, ₈₃Bi, and ₉₂U by 0.3 - 2.6-MeV ₁⁴H+ and ₂⁴He+ ions.
Date:
October 1982
Creator:
Mehta, R.; Duggan, Jerome L.; Price, J. L.; McDaniel, Floyd Del. (Floyd Delbert), 1942- & Lapicki, Gregory
Object Type:
Article
System:
The UNT Digital Library
Charge-state dependence of M-shell x-ray production in 67Ho by 2-12-MeV carbon ions
Article discussing research on the charge-state dependence of M-shell x-ray production in 67Ho by 2-12-MeV carbon ions.
Date:
November 1995
Creator:
Yu, Y. C.; Sun, H. L.; Duggan, Jerome L.; McDaniel, Floyd Del. (Floyd Delbert), 1942-; Yin, J. Y. & Lapicki, Gregory
Object Type:
Article
System:
The UNT Digital Library
Low-Velocity K-Shell Ionization Cross Sections for Protons, Deuterons and Alpha Particles Bombarding Thin Metal Targets
The purpose of this work was to examine the effect of the use the assumption κω2K/ΕCM «1 in calculating K-shell ionization cross sections in the plane wave Born approximation (PWBA) where κω2K is the observed binding energy of the K-shell and ECM is the energy of the incident particle in the center of mass system. Avoiding this assumption produces a threshold for ionization at Ecm = κω2K. Calculations employing the assumption, which leads to the use of approximate limits of integration, do not go to zero for even the .Lowest values of the incident energy.
Date:
May 1981
Creator:
Rice, Roger Karl
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
The Deepest X-Ray View of High-Redshift Galaxies: Constraints on Low-Rate Black Hole Accretion
This article exploits the 7 Ms Chandra observations in the Chandra Deep Field-South (CDF-S), the deepest X-ray survey to date, coupled with CANDELS/GOODS-S data, to measure the total X-ray emission arising from 2076 galaxies at 3.5 ≤ z ≤ 6.5.
Date:
August 5, 2016
Creator:
Vito, F.; Gilli, Roberto; Vignali, Christian; Brandt, William Nielsen; Comastri, Andrea; Yang, G. et al.
Object Type:
Article
System:
The UNT Digital Library
X-Ray Unveiling Events in a z ≈ 1.6 Active Galactic Nucleus in the 7 Ms Chandra Deep Field-South
Authors of the article explain that they investigated the extreme X-ray variability of a z = 1.608 active galactic nucleus in the 7 Ms Chandra Deep Field-South (XID 403), which showed two significant X-ray brightening events.
Date:
May 18, 2023
Creator:
Yu, Li-Ming; Luo, Bin; Brandt, William Nielsen; Bauer, Franz E.; De Cicco, D.; Fabian, Andrew C. et al.
Object Type:
Article
System:
The UNT Digital Library
Charge-state dependence of K-shell x-ray production in aluminum by 2-12-MeV carbon ions
Article discussing research on the charge-state dependence of K-shell x-ray production in aluminum by 2-12-MeV carbon ions.
Date:
June 1996
Creator:
Sun, H. L.; Yu, Y. C.; Lin, E. K.; Wang, C. W.; Duggan, Jerome L.; Azordegan, A. R. et al.
Object Type:
Article
System:
The UNT Digital Library
Infrared-Microwave Double Resonance Probing of the Population-Depopulation of Rotational States in the NO₂ and the SO₂ Molecules
A 10.6 ym C02 laser operating a power range S P 200 watts was used to pump some select vibrational transitions in the NO2 molecule while monitoring the rotational transitions (91/9—'100/10), (232f 22 ~~"*242,23> ' (402,38 "393,37) in the (0, 0, 0) vibrational level and the (8q,8—*"^1,7) rotational transition in the (0, 1, 0) vibrational level. These rotational transitions were monitored by microwave probing to determine how the population of states in the rotational manifolds were being altered by the laser. Coincidences between some components of the V3-V2 band of N02 and the C02 infrared laser lines in the 10 um region appeared to be responsible for the strong interaction between the continuous laser beams and the molecular states.
Date:
December 1982
Creator:
Khoobehi, Bahram
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Gemini Near Infrared Spectrograph–Distant Quasar Survey: Augmented Spectroscopic Catalog and a Prescription for Correcting UV-based Quasar Redshifts
Article describes how quasars at z ≳ 1 most often have redshifts measured from rest-frame ultraviolet emission lines. One of the most common such lines, C ivλ1549, shows blueshifts up to ≈5000 km s−1 and in rare cases even higher. The authors present spectroscopic measurements for 260 sources at 1.55 ≲ z ≲ 3.50 having −28.0 ≲ Mi ≲ − 30.0 mag from the Gemini Near Infrared Spectrograph–Distant Quasar Survey (GNIRS-DQS) catalog, augmenting the previous iteration, which contained 226 of the 260 sources whose measurements are improved upon in this work.
Date:
June 13, 2023
Creator:
Matthews, Brandon M.; Dix, Cooper; Shemmer, Ohad; Brotherton, Michael S.; Myers, Adam D.; Andruchow, I. et al.
Object Type:
Article
System:
The UNT Digital Library
X-Ray Spectral Constraints for z ≈ 2 Massive Galaxies: The Identification of Reflection-Dominated Active Galactic Nuclei
This article uses the 4 Ms Chandra Deep Field-South survey to place direct constraints on the ubiquity of z ≈ 2 heavily obscured active galactic nuclei.
Date:
June 6, 2011
Creator:
Alexander, David M.; Bauer, Franz E.; Brandt, William Nielsen; Daddi, Emanuele; Hickox, Ryan; Lehmer, Bret et al.
Object Type:
Article
System:
The UNT Digital Library
The allometric propagation of COVID-19 is explained by human travel
Article develops an allometric model capable of fitting the initial phase of the COVID-19 pandemic and predicting the propagation of the illness for up to 100 days.
Date:
December 18, 2021
Creator:
Tuladhar, Rohisha; Grigolini, Paolo & Santamaria, Fidel
Object Type:
Article
System:
The UNT Digital Library
Electron capture from K shells by fully stripped ions
This article discusses electron capture from K shells by fully stripped ions.
Date:
November 1980
Creator:
Lapicki, Gregory & McDaniel, Floyd Del. (Floyd Delbert), 1942-
Object Type:
Article
System:
The UNT Digital Library
Projectile charge-state dependence of K-shell ionization by silicon ions: A comparison of Coulomb ionization theories for direct ionization and electron capture with x-ray production data
Article discussing projectile charge-state dependence of K-shell ionization by silicon ions and a comparison of Coulomb ionization theories for direct ionization and electron capture with x-ray production data.
Date:
October 1977
Creator:
McDaniel, Floyd Del. (Floyd Delbert), 1942-; Duggan, Jerome L.; Basbas, George; Miller, P. D. & Lapicki, Gregory
Object Type:
Article
System:
The UNT Digital Library
K-shell ionization of elements Ca to Zn for 0.5 to 2.5-MeV/amu 14N-ion bombardment
Article discussing K-shell ionization elements Ca to Zn for 0.5 to 2.5-MeV/amu 14N-ion bombardment.
Date:
March 1977
Creator:
McDaniel, Floyd Del. (Floyd Delbert), 1942-; Duggan, Jerome L.; Miller, P. D. & Alton, G. D.
Object Type:
Article
System:
The UNT Digital Library
K-shell ionization by low-velocity ions
Article discussing K-shell ionization by low-velocity ions. K-shell x-ray-production measurements are reported for protons, deuterons, and alpha particles incident on thin foils of copper, niobium, silver, and antimony.
Date:
August 1981
Creator:
Rice, R.; McDaniel, Floyd Del. (Floyd Delbert), 1942-; Basbas, George & Duggan, Jerome L.
Object Type:
Article
System:
The UNT Digital Library
K-shell ionization of elements ₁₅P to ₂₈Ni for 0.4 to 3.8 MeV/amu ₅¹⁰B-ion bombardment
Article discussing K-shell ionization of elements ₁₅P to ₂₈Ni for 0.4 to 3.8 MeV/amu ₅¹⁰B-ion bombardment.
Date:
August 1978
Creator:
Monigold, G.; McDaniel, Floyd Del. (Floyd Delbert), 1942-; Duggan, Jerome L.; Rice, R.; Toten, A.; Mehta, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Non-Poisson distribution of the time distances between two consecutive clusters of earthquakes
Article discussing non-Poisson distribution of the time distances between two consecutive clusters of earthquakes.
Date:
2004
Creator:
Palatella, Luigi; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Mega, Mirko S.; Rapisarda, Andrea et al.
Object Type:
Article
System:
The UNT Digital Library
Power-Law Time Distribution of Large Earthquakes
Article discussing power-law time distribution of large earthquakes and a study of the statistical properties of time distribution of seismicity in California by means of diffusion entropy.
Date:
May 2003
Creator:
Mega, Mirko S.; Allegrini, Paolo; Grigolini, Paolo; Latora, Vito; Palatella, Luigi; Rapisarda, Andrea et al.
Object Type:
Article
System:
The UNT Digital Library
L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions
Article discussing research on L- and M-shell x-ray production cross sections of Nd, Gd, Ho, Yb, Au, and Pb by 25-MeV carbon and 32-MeV oxygen ions.
Date:
October 15, 1987
Creator:
Andrews, M. C.; McDaniel, Floyd Del. (Floyd Delbert), 1942-; Duggan, Jerome L.; Miller, P. D.; Pepmiller, P. L.; Krause, H. F. et al.
Object Type:
Article
System:
The UNT Digital Library
Detection of invisible and crucial events: from seismic fluctuations to the war against terrorism
Paper discussing the detection of invisible and crucial events.
Date:
October 28, 2003
Creator:
Allegrini, Paolo; Fronzoni, Leone; Grigolini, Paolo; Latora, Vito; Mega, Mirko S.; Palatella, Luigi et al.
Object Type:
Paper
System:
The UNT Digital Library
Electron localization in a two-channel tight-binding model with correlated disorder
This article discusses electron localization in a two-channel tight-binding model with correlated disorder.
Date:
October 5, 2007
Creator:
Bagci, V. M. K. & Krokhin, Arkadii A.
Object Type:
Article
System:
The UNT Digital Library