Search Results - "Hamm, R. W."

A unification of small- and large-crack growth laws by HAMM, R. W, JOHNSON, W. S

“…A generalized model enhancement is proposed to link small- and large-crack growth laws. The enhancement is based on crack growth rate laws with crack tip…”
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An improved technique for aligning the light field with the radiation fields on radiotherapy accelerators by Johnsen, S W, Hamm, R W

“…An improved scheme has been developed for measuring the coincidence of the light field and radiation fields of a radiotherapy accelerator. Scans of the light…”
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Microstructural influences on the growth of small cracks in Ti-6Al-4V by OHCHANG JIN, HAMM, Richard W, JOHNSON, W. Steven

“…The effects of microstructure on the growth of small cracks in Ti-6Al-4V under fatigue loading are presented. The small crack growth is compared with large…”
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A compact tritium AMS system by Roberts, M.L, Hamm, R.W, Dingley, K.H, Chiarappa-Zucca, M.L, Love, A.H

“…Tritium ( 3H) is a radioisotope that is extensively utilized in biological and environmental research. For biological research, 3H is generally quantified by…”
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Performance Characteristics of a 425-MHz RFQ Linac by Stovall, James E., Crandall, K. R., Hamm, R. W.

“…A radio-frequency quadrupole (RFQ) focused proton linac has been developed and successfully tested at the Los Alamos Scientific Laboratory (LASL) for the…”
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Branching ratio of the H-(n=2) shape resonance by HALKA, M, BRYANT, H. C, DONAHUE, J. B, GRAM, P. A. M, HAMM, R. W, HSU, A, MACCARTHUR, D. W, MACKERROW, E. P, QUICK, C. R, TIEE, J, JOHNSTONE, C, MARCHINI, B, MILLER, W, MAHAGHEGHE, A. H, TANG, C. Y, BUTTERFIELD, K. B, CLARK, D. A, COHEN, S

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The use of low energy, ion induced nuclear reactions for proton radiotherapy applications by Horn, K.M., Doyle, B., Segal, M.N., Hamm, R.W., Adler, R.J., Glatstein, E.

“…Medical radiotherapy has traditionally relied upon the use of external photon beams and internally implanted radioisotopes as the chief means of irradiating…”
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Effects of strong electric fields on resonant structures in H − photodetachment by Bryant, H. C., Clark, David A., Butterfield, Kenneth B., Frost, C. A., Sharifian, H., Tootoonchi, H., Donahue, J. B., Gram, P. A. M., Hamm, M. E., Hamm, R. W., Pratt, J. C., Yates, M. A., Smith, W. W.

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Observation of Narrow Resonances in the H − Photodetachment Cross Section near the n = 3 Threshold by Hamm, M. E., Hamm, R. W., Donahue, J., Gram, P. A. M., Pratt, J. C., Yates, M. A., Bolton, R. D., Clark, D. A., Bryant, H. C., Frost, C. A., Smith, W. W.

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Beam, an Improved Beam Extraction and Acceleration Modeling Code by Shubaly, M. R., Judd, R. A., Hamm, R. W.

“…The desirable features of an ion beam extraction and acceleration modeling code are outlined, and features of the BEAM (Beam Extraction and Acceleration…”
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A Compact 250-kV Injector System for PIGMI by Hamm, R. W., Stevens, Ralph R., Mueller, D. W., Leavitt, J. N., Lederer, H. M.

“…A 250-kV proton injector to be used in the development of a linac suitable for medical applications has been constructed. This injector utilizes a spherical…”
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Photodetachment of Relativistic Ions by Donahue, J. B., Gram, P. A. M., Hamm, M. E., Hamm, R. W., Bryant, H. C., Butterfield, K. B., Clark, D. A., Frost, C. A., Smith, W. W.

“…A series of fundamental laser ion beam experiments has been made feasible by the high-quality, relativistic (ß = 0.842) H- ion beam available at the Clinton P…”
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Performance of a CW RFQ Injector for the IUCF Cyclotron by Derenchuk, V.P., Anferov, V., East, G., Friesel, D.L., Hamm, R.W., Jones, W.P., Staples, J.

“…A 750 keV RFQ proton pre-injector was installed in place of a 600 keV Cockroft-Walton high voltage terminal for the IUCF k220 Cyclotron [1]. The pre-injector…”
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Time-Resolved Beam Energy Measurements at LAMPF by Clark, D. A., Bryant, H. C., Frost, C. A., Donahue, J. B., Hamm, M. E., Hamm, R. W., Hudgings, D. W., McNaughton, M. W., Pratt, J. C., Yates-Williams, M. A.

“…A narrow atomic photodetachment resonance is used to measure the LAMPF beam energy. Energy and time resolution are adequate to permit the use of this method in…”
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Advantages of combining an EBIS with the PIGMI technology by Hamm, R W

“…The Electron Beam Ion Source (EBIS) produces highly charged heavy ions by electron impact ionization of ions electrostatically trapped within a dense energetic…”
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Observation of Two-Electron Photoionization of the H − Ion near Threshold by Donahue, J. B., Gram, P. A. M., Hynes, M. V., Hamm, R. W., Frost, C. A., Bryant, H. C., Butterfield, K. B., Clark, David A., Smith, W. W.

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A unification of small- and large-crack growth laws by Hamm, Richard W., Johnson, W. Steven

“…A generalized model enhancement is proposed to link small‐ and large‐crack growth laws. The enhancement is based on crack growth rate laws with crack tip…”
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Properties of the Texas A&M Electron Beam Ion Source by Hamm, R. W., Kenefick, R. A.

“…An EBIS (Electron Beam Ion Source) is presently being constructed for use on the Texas A&M cyclotron as an external heavy ion source. This description of the…”
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High-current four-beam xenon ion source for heavy-ion fusion by Shubaly, M R, Hamm, R W

“…The growing interest in inertial confinement fusion using heavy ions has elicited from the Los Alamos Scientific Laboratory a proposal to use a multi-channel…”
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Current Results from the Texas A&M Electron Beam Ion Source by Hamm, R. W., Choate, L. M., Kenefick, R. A.

“…The electron beam ion source (EBIS) at Texas A&M University has been constructed and is currently undergoing tests on the injection and transmission of the…”
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