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Experiments of the Effect of Atomic Electrons on the DecayConstant of Be7
In an attempt to detect a possible influence of the atomic electrons on the radioactive decay constant of Be{sup 7} they have measured {lambda}{sub Be}-{lambda}{sub BeO} and found (-3.0 {+-} 1.8) 10{sup -4} {lambda}{sub Be}. They describe also a method to measure mean lives of radioactive substances in a time short compared with the mean life.
Date:
July 1, 1948
Creator:
Segre, Emilio & Wiegand, Clyde
Object Type:
Report
System:
The UNT Digital Library
Artificial Collateral Chains to the Thorium and ActiniumFamilies
The authors have produced and identified two new series of alpha-particle emitting radioactive elements; one is a 'collateral' branch of the actinium (4n + 3) radioactive family and the other is collateral to the thorium (4n) family. The series are of considerable interest in that they are the first whose early members lie on the neutron deficient side of beta stability. They have been produced in high yield of irradiation of thorium with deuterons of energy about {sup 80}Mev in the Berkeley 184-inch cyclotron. So far as the present observations are concerned both of these series begin with isotopes of protactinium (atomic number 91), although progenitors with higher atomic numbers are to be expected and will possibly be produced and identified. These protactinium isotopes are Pa{sup 227} and Pa{sup 228} formed by d,7n and d,6n reactions respectively.
Date:
July 1, 1948
Creator:
Ghiorso, A.; Meinke, W. W. & Seaborg, G. T.
Object Type:
Report
System:
The UNT Digital Library
Monthly Progress Report No. 60 for April 1948
This report gives a short summary of each of the following programs: (1) 184-inch Cyclotron Program; (2) 60-inch Cyclotron Program; (3) Synchrotron Program; (4) Linear Accelerator Program; (5) Experimental Physics; (6) Theoretical Physics; (7) Chemistry; (8) Medical Physics; and (9) Health Physics and Chemistry.
Date:
May 1, 1948
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Monthly Progress Report No. 58 for February 1948
This is a monthly progress report on the following programs: (1) 184-inch Cyclotron; (2) 60-inch Cyclotron; (3) Synchrotron; (4) Linear Accelerator; (5) Experimental Physics; (6) Theoretical Physics; (7) Isotope Research; (8) Chemistry; (9) Medical Physics; and (10) Health Physics and Chemistry.
Date:
February 1, 1948
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Path of Carbon in Photosynthesis III
Although the overall reaction of photosynthesis can be specified with some degree of certainty (CO{sub 2} + H{sub 2}O + light {yields} sugars + possibly other reduced substances), the intermediates through which the carbon passes during the course of this reduction have, until now, been largely a matter of conjecture. The availability of isotopic carbon, that is, a method of labeling the carbon dioxide, provides the possibility of some very direct experiments designed to recognize these intermediates and, perhaps, help to understand the complex sequence and interplay of reactions which must constitute the photochemical process itself. The general design of such experiments is an obvious one, namely the exposure of the green plant to radioactive carbon dioxide and light under a variety of conditions and for continually decreasing lengths of time, followed by the identification of the compounds into which the radioactive carbon is incorporated under each condition and time period. From such data it is clear that in principle, at least, it should be possible to establish the sequence of compounds in time through which the carbon passes on its path from carbon dioxide to the final products. In the course of shortening the photosynthetic times, one times, one …
Date:
June 1, 1948
Creator:
Benson, A. A. & Calvin, M.
Object Type:
Report
System:
The UNT Digital Library
Monthly Progress Report No. 59 for March 1948
This monthly progress report covers the following programs: (1) 184-inch Cyclotron; (2) 60-inch Cyclotron; (3) Synchrotron; (4) Linear Accelerator; (5) Experimental Physics; (6) Theoretical Physics; (7) Chemistry; (8) Medical Physics; and (9) Health Physics and Chemistry.
Date:
March 1, 1948
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The El Reno Daily Tribune (El Reno, Okla.), Vol. 57, No. 182, Ed. 1 Friday, October 1, 1948
Daily newspaper from El Reno, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 1, 1948
Creator:
Harle, Budge
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Texas Leaguer (Bellaire, Tex.), Vol. 1, No. 2, Ed. 1 Thursday, January 1, 1948
Monthly newspaper from Bellaire, Texas published by the Texas Branch, National League of District Postmasters that includes local, state, and national news of interest to postmasters along with advertising.
Date:
January 1, 1948
Creator:
Rosner, Leon L. & Amos, Dell
Object Type:
Newspaper
System:
The Portal to Texas History
The Denison Press (Denison, Tex.), Vol. 20, No. 14, Ed. 1 Friday, October 1, 1948
Weekly newspaper from Denison, Texas that includes local, state and national news along with advertising.
Date:
October 1, 1948
Creator:
Anderson, LeRoy M.
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 45, No. 9, Ed. 1 Thursday, July 1, 1948
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
July 1, 1948
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 44, No. 48, Ed. 1 Thursday, April 1, 1948
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
April 1, 1948
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Shamrock Texan (Shamrock, Tex.), Vol. 44, No. 35, Ed. 1 Thursday, January 1, 1948
Weekly newspaper from Shamrock, Texas that includes local, state, and national news along with advertising.
Date:
January 1, 1948
Creator:
Montgomery, Arval
Object Type:
Newspaper
System:
The Portal to Texas History
The Dublin Progress (Dublin, Tex.), Vol. 60, No. 28, Ed. 1 Friday, October 1, 1948
Weekly newspaper from Dublin, Texas that includes local, state, and national news along with advertising.
Date:
October 1, 1948
Creator:
Perry, Francis E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Bogata News (Bogata, Tex.), Vol. 37, No. 49, Ed. 1 Friday, October 1, 1948
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
October 1, 1948
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Clarksville Times (Clarksville, Tex.), Vol. 76, No. [37], Ed. 1 Friday, October 1, 1948
Weekly newspaper from Clarksville, Texas that includes local, state, and national news along with advertising.
Date:
October 1, 1948
Creator:
Pinson, Joe
Object Type:
Newspaper
System:
The Portal to Texas History
The McGregor Mirror and Herald-Observer (McGregor, Tex.), Vol. 60, No. 19, Ed. 1 Friday, October 1, 1948
Weekly newspaper from McGregor, Texas that includes local, state, and national news along with advertising.
Date:
October 1, 1948
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Nuclear Reactor Project Progress Report, January 1948
This report is a progress report detailing operations and ongoing projects at the Brookhaven National Laboratory. The report describes new developments with buildings and progress regarding ongoing experiments. The report includes photographs showing progress in the construction of the reactor and other images and figures that accompany the descriptions of projects.
Date:
January 1, 1948
Creator:
Borst, L. B. & Fox, Marvin
Object Type:
Report
System:
The UNT Digital Library
Nuclear Reactor Progress Report
Technical report describing the building of safety devices and features for the Oak Ridge reactor by the Reactor Safeguard Committee of the Atomic Energy Commission. Outlines the difficulties encountered in detailed design and construction operations for the facility.
Date:
October 1, 1948
Creator:
Brookhaven National Laboratory
Object Type:
Report
System:
The UNT Digital Library
The Caldwell News and The Burleson County Ledger (Caldwell, Tex.), Vol. 62, No. 10, Ed. 1 Friday, October 1, 1948
Weekly newspaper from Caldwell, Texas that includes local, state and national news along with extensive advertising.
Date:
October 1, 1948
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 96, No. 18, Ed. 1 Thursday, July 1, 1948
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
July 1, 1948
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 95, No. 43, Ed. 1 Thursday, January 1, 1948
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
January 1, 1948
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Bastrop Advertiser (Bastrop, Tex.), Vol. 96, No. 5, Ed. 1 Thursday, April 1, 1948
Weekly newspaper from Bastrop, Texas that includes local, state and national news along with extensive advertising.
Date:
April 1, 1948
Creator:
Standifer, Amy S.
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 51, No. 261, Ed. 1 Monday, November 1, 1948
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
November 1, 1948
Creator:
Baker, Allen
Object Type:
Newspaper
System:
The Portal to Texas History
Sweetwater Reporter (Sweetwater, Tex.), Vol. 51, No. 78, Ed. 1 Thursday, April 1, 1948
Daily newspaper from Sweetwater, Texas that includes local, state and national news along with advertising.
Date:
April 1, 1948
Creator:
Welsh, Edward
Object Type:
Newspaper
System:
The Portal to Texas History