Decay Times of Fluorescent Substances Excited by High-Energy Radiation
Decay times of fluorescent light emitted by organic solutions and by onganic and inorganic solids when excited by high-energy radiation are determined under various experimental conditions. The pulse-height ratios for alpha particle and electron excitations are also found. The probabilities for radi...
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| Veröffentlicht in: | Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, 1957-12, Vol.108 (5), p.1122-1130 |
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| container_title | Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D |
| container_volume | 108 |
| creator | Kallmann, Hartmut Brucker, George J. |
| description | Decay times of fluorescent light emitted by organic solutions and by onganic and inorganic solids when excited by high-energy radiation are determined under various experimental conditions. The pulse-height ratios for alpha particle and electron excitations are also found. The probabilities for radiative and nonradiative transitions of the light emitting molecule are estimated and compared with values obtained from absorption measurements. The time required for energy transfer is estimated. The ratio of pulse heights obtained under alpha -particle excitation to those obtained under electron excitation are found to be roughly the same for all organic solutions and solids despite wide variations in lifetime; also no difference in lifetime between alpha -particle and electron excitations is found. This is not explained by present theories. A new theory to explain these facts is outlined. (auth) |
| doi_str_mv | 10.1103/PhysRev.108.1122 |
| format | Article |
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The pulse-height ratios for alpha particle and electron excitations are also found. The probabilities for radiative and nonradiative transitions of the light emitting molecule are estimated and compared with values obtained from absorption measurements. The time required for energy transfer is estimated. The ratio of pulse heights obtained under alpha -particle excitation to those obtained under electron excitation are found to be roughly the same for all organic solutions and solids despite wide variations in lifetime; also no difference in lifetime between alpha -particle and electron excitations is found. This is not explained by present theories. A new theory to explain these facts is outlined. 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(auth)</description><subject>ABSORPTION</subject><subject>ALPHA PARTICLES</subject><subject>DECAY</subject><subject>ELECTRONS</subject><subject>ENERGY</subject><subject>ENERGY RANGE</subject><subject>EQUATIONS</subject><subject>EXCITATION</subject><subject>FLUORESCENCE</subject><subject>HALF-LIFE</subject><subject>LIGHT</subject><subject>MEASURED VALUES</subject><subject>MOLECULES</subject><subject>ORGANIC COMPOUNDS</subject><subject>OSCILLATIONS</subject><subject>PHYSICS</subject><subject>RADIATIONS</subject><subject>SOLIDS</subject><subject>SOLUTIONS</subject><issn>0031-899X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1957</creationdate><recordtype>article</recordtype><recordid>eNotkMFLwzAUh3NQcE7vHoP3zrwkrc1RZueEgTIneAtp8rJGtlaaTOx_b8d2-vF-7-Px-Ai5AzYDYOLhvRniGn9nwMqx4PyCTBgTkJVKfV2R6xi_GQOppJyQxTNaM9BN2GOknaeL3aHrMVpsE_041DGZ1o6b6s-GhI7WA12GbZNVLfbbga6NCyaFrr0hl97sIt6ec0o-F9VmvsxWby-v86dVZoWQKauLwrvHwgMo5ThXRlmLIC13Hso8Lzw3yBXw3An0yI3yXha1dbkRihmsxZTcn-52MQUdj0_ZxnZtizZpKUCWrBghdoJs38XYo9c_fdibftDA9FGQPgsa51IfBYl_50xdRw</recordid><startdate>19571201</startdate><enddate>19571201</enddate><creator>Kallmann, Hartmut</creator><creator>Brucker, George J.</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>OTOTI</scope></search><sort><creationdate>19571201</creationdate><title>Decay Times of Fluorescent Substances Excited by High-Energy Radiation</title><author>Kallmann, Hartmut ; Brucker, George J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-b66fd76f1199d229a9cce14c2df18556f2ae29125d3efe2a9ff46bcd5a390aeb3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1957</creationdate><topic>ABSORPTION</topic><topic>ALPHA PARTICLES</topic><topic>DECAY</topic><topic>ELECTRONS</topic><topic>ENERGY</topic><topic>ENERGY RANGE</topic><topic>EQUATIONS</topic><topic>EXCITATION</topic><topic>FLUORESCENCE</topic><topic>HALF-LIFE</topic><topic>LIGHT</topic><topic>MEASURED VALUES</topic><topic>MOLECULES</topic><topic>ORGANIC COMPOUNDS</topic><topic>OSCILLATIONS</topic><topic>PHYSICS</topic><topic>RADIATIONS</topic><topic>SOLIDS</topic><topic>SOLUTIONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Kallmann, Hartmut</creatorcontrib><creatorcontrib>Brucker, George J.</creatorcontrib><creatorcontrib>New York Univ</creatorcontrib><creatorcontrib>Evans Signal Lab., For Monmouth, N.J</creatorcontrib><collection>CrossRef</collection><collection>OSTI.GOV</collection><jtitle>Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kallmann, Hartmut</au><au>Brucker, George J.</au><aucorp>New York Univ</aucorp><aucorp>Evans Signal Lab., For Monmouth, N.J</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Decay Times of Fluorescent Substances Excited by High-Energy Radiation</atitle><jtitle>Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D</jtitle><date>1957-12-01</date><risdate>1957</risdate><volume>108</volume><issue>5</issue><spage>1122</spage><epage>1130</epage><pages>1122-1130</pages><issn>0031-899X</issn><abstract>Decay times of fluorescent light emitted by organic solutions and by onganic and inorganic solids when excited by high-energy radiation are determined under various experimental conditions. The pulse-height ratios for alpha particle and electron excitations are also found. The probabilities for radiative and nonradiative transitions of the light emitting molecule are estimated and compared with values obtained from absorption measurements. The time required for energy transfer is estimated. The ratio of pulse heights obtained under alpha -particle excitation to those obtained under electron excitation are found to be roughly the same for all organic solutions and solids despite wide variations in lifetime; also no difference in lifetime between alpha -particle and electron excitations is found. This is not explained by present theories. A new theory to explain these facts is outlined. (auth)</abstract><doi>10.1103/PhysRev.108.1122</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0031-899X |
| ispartof | Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, 1957-12, Vol.108 (5), p.1122-1130 |
| issn | 0031-899X |
| language | eng |
| recordid | cdi_crossref_primary_10_1103_PhysRev_108_1122 |
| source | American Physical Society Journals |
| subjects | ABSORPTION ALPHA PARTICLES DECAY ELECTRONS ENERGY ENERGY RANGE EQUATIONS EXCITATION FLUORESCENCE HALF-LIFE LIGHT MEASURED VALUES MOLECULES ORGANIC COMPOUNDS OSCILLATIONS PHYSICS RADIATIONS SOLIDS SOLUTIONS |
| title | Decay Times of Fluorescent Substances Excited by High-Energy Radiation |
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