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A UNITED STATES
DEPARTMENT OF
COMMERCEPUBLICATION
/ V \
0 >’^rii o*
h
AiiiD5 mtms
NBS
PUBLICATIONS——
—
NATL INST OF STANDARDS & TECH R.I.C.
All 102146145/NSRDS-NBSQC100 U573 V3;6;1972 C.1 NBS-PUB-C 1964
NSRDS-NBS 3, Section 6
u.s.
epartmentOF
COMMERCENational
QC, u
too•0S73 Ino. 3 I
£ c.c t * (& I
Ia*
NSRDSP*>CE 0
’
Selected Tables
of Atomic Spectra
Atomic Energy Levels and Multiplet Tables
HlD, T
NATIONAL BUREAU OF STANDARDS
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Selected Tables of Atomic Spectra
A Atomic Energy Levels - Second Edition
B Multiplet Tables
tUD,T
Data Derived from the Analyses of Optical Spectra
Charlotte E. Moore
Office of Standard Reference Data
National Bureau of Standards
Washington, D.C. 20234
E. O. Hulburt Center for Space Research
U.S. Naval Research Laboratory
Washington, D.C. 20390
JV (\^s swv\ & V e ~ c <? d oJt^L Se\rirSJ
y\/SPDC'/VS5 /U
U.S. DEPARTMENT OF COMMERCE, Peter G. Peterson, Secretary
NATIONAL BUREAU OF STANDARDS,
Issued September 1972
Library of Congress Catalog Card Number: 64-60074
NSRDS-NBS 3, Section 6
Nat. Stand. Ref. Data Ser., Nat. Bur. Stand. (U.S.), 3, Sec. 6, 36 pages (Sept. 1972)
D, T; spectra H I, D, T; wavelengths, hydrogen spectra H I, D, T.
Ill
Foreword
The National Standard Reference Data System provides effective access to the quantitative
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IV
Preface
The present publication is the sixth Section of a series that is being prepared in response to
the increasing demand for a current revision of two sets of tables containing data on atomic spectra
as derived from analyses of optical spectra.
The first set, Atomic Energy Levels, NBS Circular 467, consists of three Volumes published,
respectively, in 1949, 1952, and 1958, and a fourth one on rare-earth spectra, still in course of
preparation. This Circular has been reprinted as NSRDS-NBS 35, Volumes I, II, and III.
The second set consists of two Multiplet Tables; one published in 1945 by the Princeton Uni-
versity Observatory containing multiplets having wavelengths longer than 3000 A; the other. AnUltra-Violet Multiplet Table, NBS Circular 488, appearing in five Sections, the first in 1950, the
second in 1952, and the others in 1962. The 1945 Princeton Multiplet Table has been reprinted as
NSRDS-NBS 40.
The present series includes both sets of data, the energy levels and multiplet tables, as parts
A and B, respectively, for selected spectra contained in Volume I of “Atomic Energy Levels.”
The Sections are being published at irregular intervals as revised analyses become available. Aflexible paging system permits the arrangement of the various Sections by atomic number, regard-
less of the order in which the separate spectra are published. Section 1 includes three spectra of
silicon, Z — 14: Si II, Si III, Si IV. Section 2 contains similar data for Si I. Section 3 covers all the
spectra of carbon, Z = 6: C I, C II, C III, C IV, C V, C VI. Section 4 includes four spectra of nitrogen,
Z= 7: N iv, N V, N VI, N VII. Section 5 is scheduled to include the remaining spectra of nitrogen:
N I, N II, N ill. The form of presentation of the data is described in detail in the text of Section 1.
All Sections are arranged identically and the same conversion factor, cm -1to eV, 0.000123981
is used throughout.
The manuscript has been prepared by Charlotte E. Moore who has published the earlier tables.
She appreciates the cordial cooperation of numerous atomic spectroscopists. She is particularly
indebted to J. D. Garcia and the late J. E. Mack, who carried out the extensive calculations on
hydrogen-like spectra, especially for inclusion in this Series. W. C. Martin and his colleagues in
the Spectroscopy Section of the National Bureau of Standards have provided valuable suggestions
regarding details in the text and tables. Special thanks are due Isabel D. Murray for her meticulous
care in preparing the tabular data. The splendid work of Barbara N. Somerville in typing the press
copy of this difficult tabular material is, also, gratefully acknowledged.
Washington, D.C., March 24, 1972.
V
--
Abstract.
Foreword
Preface . .
.
ContentsP»*e
III
IV
V
Element: Z
Hydrogen 1
Deuterium
Tritium
Element: Z
Hydrogen 1
Deuterium
Tritium
Part A— Atomic Energy Levels
Spectrum
Hi A1 i 1 to A1 i-3
D A1 D, T-l to A1 D, T-2
T A1 D, T-l to A1 D, T-2
Part B— Multiplet Tables
Spectrum
Hi B1 I 1 to B1 1-8
D B1 D-l
T B1 T-l
-
-
NSRDS--NBS 3, SECTION 6
HYDROGEN Z = 1
A Hi Atomic Energy Levels
B Hi Multiplet Table
Atomic Energy Levels
HYDROGEN
Part A Hi
1 electron Z = 1
Ground state Is 2Soi /2
Is 2So ,/2 109678.764 cm- 1
, 911.754 A (Vac) I P 13.598 eV
The data quoted here refer to the light isotope of hydrogen JHl. Deuterium and tritium are
being handled separately.
The energy levels of the spectra of the hydrogen isoelectronic sequence H I to Ca XX have
been calculated by Garcia and Mack and reported in a paper entitled “Energy Level and Line
Tables for One-Electron Atomic Spectra.” For H I the level values are derived to six decimal places
to n — 50, with R = 109677.576 cm-1.
In the present table the calculated values have been rounded off to three decimals. Intervals
are quoted to four places only in cases of resolved levels. For further details users should consult
the original paper.
For unresolved groups the term designations in Part B have no real significance. The center of
gravity of all levels having a given value of n has been used to derive the quoted wavelength, re-
gardless of the arbitrary designation entered with “etc.” throughout.
Since the publication of “Atomic Energy Levels,” Humphreys has reported the observation
of the first member of the Sixth Series of H I at 12.37 /x, the second line of the Pfund Series and the
third, fourth and fifth lines of the Brackett Series.
The Lamb shift and both fine and hyperfine structure of H I have been widely discussed in the
literature. In 1964 Edlen and Svensson derived accurate “centre-of-gravity” wavelengths of the
Lyman lines, Is — np, n = 2 to 7, and discussed “the various factors pertinent to their use as
standards.”
Observations of H I in the radiofrequency range have been of far-reaching significance. For
example, the transition between the two hyperfine structure levels F=0 and F= 1 of the ground
term Is 2Soi/2 ,
0.0475 cm' 1, is well known as the 21-cm line whose observed frequency is 1420 Mc/s.
The presence of ground state hydrogen atoms in the interstellar medium was first established by
the detection of this line.
A limited bibliography of work on H I was published by the writer in 1968. Many other papers
could be quoted, as for example, the recent work by Shyn and his associates on the measurementof the 2s 2So ,/ 2
— 2p2Pb/ 2
energy separation as 9911.250 ± 0.063 MHz, as determined by an atomic-
beam radiofrequency method.
A more recent paper by Hansch and his co-workers on Laser Saturation Spectroscopy is of
far-reaching importance. These authors have succeeded for the first time in resolving the single
fine structure components of H a, and have observed the Lamb shift directly in the optical absorp-
tion spectrum.
An excellent general summary of the astrophysical importance of “The Spectra of Hydrogen”
is contained in the Presidential Address to the Royal Society of Canada given by Herzberg in 1967.
A1 i-l
Atomic Energy Levels
H I— Continued
REFERENCES
C. J. Humphreys, J. Research Nat. Bur. Std. 50, No. 1, 1-6, RP 2380 (1953). T, C L
B. Edlen and L. A. Svensson, Ark. Fys. (Stockholm) 28, No. 36, 427—446 (1964). C L
J. D. Garcia and J. E.Mack, J. Opt. Soc. Am. 55, No. 6, 654-685 (1965). I P. T, C L
G. Herzberg, Trans. Roy. Soc. Canada [IV] 5, 3-36 (1967). T, C L. G D, Fine structure, hfs.
C. E. Moore, Nat. Bur. Std. Special Publ. 306, Section 1, 1-2 (1968). Bibliography
T. W. Shyn, T. Rebane, R. T. Robiscoe, and W. L. Williams, Phys. Rev. A3, No. 1, 116-122 (1971). Fine structure.
T. W. Hansch, I. S. Shahin, A. L. Schawlow, Nature Phys. Sci. 235, No. 56, 63-66 (1972). Fine structure.
L. Hagan and W. C. Martin. Nat. Bur. Std. Special Publ. 363. 103 pp. (1972). Bibliography.
I P 13.602 eV Limit 109708.608 cm' 1 911.506 A (Vac)
Anal A List C February 1972
REFERENCE
A J. D. Garcia and J. E. Mack, J. Opt. Soc. Am. 55, No. 6, 654-685 (1965). I P, T, C L; W L 925.9737 A to 123652.691 A.
For higher values of n where the terms are unresolved, the wavelength derived from the statistical mean of the com-
ponents is quoted.
New Multiplet Numbers have been assigned.
D D
I A Ref Int
E P
JMultiplet
No.I A Ref Int
EPJ
Multiplet
No.Low High Low High
Vac Air
1215.3376 A 0.00 10.20 0i-U Is 2S -2
p
2po6561.0104 A Da 10.20 12.09 2p 2 P°— 3d 2D
1215.3430 A 0.00 10.20 0i-0i UV 1 etc. 1 etc.
1025.4429 A 0.00 12.09 oj-ii Is 2S — 3
p
2p° 4860.0028 A D/J 10.20 12.75 2p 2 P°— 4d 2D
1025.4401 A 0.00 12.09 0i-0i UV 2 etc. 2 etc.
972.2721 A 0.00 12.75 oi-ii Is 2S — 4p2p° 4339.2829 A Dy 10.20 13.06 2p 2 P°— 5d 2D
972.2725 A 0.00 12.75 0i-0J UV 3 etc. 3 etc.
949.4846 A 0.00 13.06 oi-li Is 2S — 5
p
2 p° 4100.6191 A D6 10.20 13.22 2p 2 P°— 6d 2D
949.4848 A 0.00 13.06 OJ-Oi UV 4 etc. 4 etc.
937.5483 A 0.00 13.22 ot-U Is 2S — 6p 2JX> 3968.9922 A De 10.20 13.32 2p 2 P°
—
Id 2D
937.5484 A 0.00 13.22 0i-0i UV 5 etc. 5 etc.
930.4951 A 0.00 13.32 0i- Is 2S —7p 2fK> 3887.9909 A 10.20 13.39 2p 2 P°
—
6d *D
UV 6 etc. 6 etc.
925.9737 A 0.00 13.39 0i- Is 2S — 8p2JJO
UV 7 18745.914 A 12.09 12.75 3d SD —4/ *Petc. 7 etc.
911.5055 A 0.00 13.60 0£- Is 2S — Limit 12814.595 A 12.09 13.06 3d *D —5/ 2PUV 8 etc. 8 etc.
10935.120 A 12.09 13.22 3d 2D —6/ tp
etc. 9 etc.
10046.640 A 12.09 13.32 3d *D —7/ ip
etc. 10 etc.
9543.375 A 12.09 13.39 3d‘D —8/ ip
etc. 1
1
etc.
B1 D-l
. -i' •
• v '# j
.. .. ; .
;
:i
k. ’<
: I :: .
Multi plet Table
TRITIUM
Part B T(?H i)
I P 13.603 eV Limit 109718.538 cm- 1 911.423 A (Vac)
Anal A List D February 1972
REFERENCE
A J. D. Garcia and J. E. Mack, J. Opt. Soc. Am. 55, No. 6, 654-685 (1965). I F, T, C L; W L 925.8900 A to 123641.500 A
For higher values of n where the terms are unresolved, the wavelength derived from the statistical mean of the compo-
nents is quoted.
T T
I A Ref Int
E P
JMultiplet
No.I A Ref Int
E P
JMultiplet
No.Low High Low High
Vac Air
1215.2276 A 0.00 10.20 0i-H Is 2S —2p 2 P° 6560.4166 A Ta 10.20 12.09 2p 2P
—
3d 2D1215.2330 A 0.00 10.20 0F-0* UV 1 etc. 1 etc.
1025.3501 A 0.00 12.09 oi-H Is 2S —3p 2 P° 4859.5630 A T/3 10.20 12.75 2p 2 P°
—
\d 2D1025.3512 A 0.00 12.09 0£-0£ UV 2 etc. 2 etc.
972.1841 A 0.00 12.75 Is 2S — 4p 2P 4338.8902 A Ty 10.20 13.06 2p2P— 5<f
2D972.1845 A
|0.00 12.75 0£-0* UV 3 etc. 3 etc.
949.3987 A 0.00 13.06 oi-n Is 2S — 5p2 P° 4100.2479 A T8 10.20 13.23 2p
2P—
6
d 2D949.3989 A 0.00 13.06 0*-0£ UV 4 etc. 4 etc.
937.4635 A 0.00 13.23 ot-n Is 2S —6p 2 P° 3968.6329 A Te 10.20 13.33 2p 2P— Id 2D937.4636 A 0.00 13.23 0i-0i UV 5 etc. 5 etc.
911.4230 A 0.00 13.60 Is 2S — Limit
UV 6
Bl T-l
;
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1. Electrochemistry of Molten Salts: Gibbs
Free Energies and Excess Free Energies
from Equilibrium-Type Cells, by G. J. Janz
and C. G. M. Dijkhuis; Section 2. Surface Ten-
sion Data, by G. J. Janz, G. R. Laksh-
minarayanan, R. P. T. Tomkins, and J. Wong,
1969 ($2.75), SD Catalog No. C13.48:28/Vol.2.
NSRDS-NBS 29, Photon Cross Sections, At-
tenuation Coefficients, and Energy Absorp-
tion Coefficients from 10 keV to 100 GeV,by J. H. Hubbell, 1969 (75 cents), SD Catalog No.
C13.48:29.
NSRDS-NBS 30, High Temperature Proper-
ties and Decomposition of Inorganic Salts,
Part 2. Carbonates, by K. H. Stern and E. L.
Weise, 1969 (45 cents), SD Catalog No.
C13.48:30/Pt.2.
NSRDS-NBS 31, Bond Dissociation Energies
in Simple Molecules, by B. deB. Darwent, 1970
(55 cents), SD Catalog No. C 13.48:3 1
.
NSRDS-NBS 32, Phase Behavior in Binary
and Multicomponent Systems at Elevated
Pressures: rc-Pentane and Methane-n-Pen-
tane, by V. M. Berry and B. H. Sage, 1970 (70
cents), SD Catalog No. C13.48:32.
NSRDS-NBS 33, Electrolytic Conductanceand the Conductances of the Halogen Acids
in Water, by W. J. Hamer and H. J. DeWane,
1970 (50 cents), SD Catalog No. C13.48:33.
NSRDS-NBS 34, Ionization Potentials andIonization Limits Derived from the
Analyses of Optical Spectra, by C. E. Moore,
1970 (75 cents), SD Catalog No. C13.48:34.
NSRDS-NBS 35, Atomic Energy Levels as
Derived from the Analyses of Optical Spec-
tra, Vol. I, H to 23V ; Vol. II, 24Cr to 41Nb;
Vol. Ill, 42Mo to 57La, 72Hf to 89Ac, by C. E.
Moore, 1971 (Vol. I, $5; Vol. II, $4.25; Vol. Ill,
$4.50), SD Catalog No. 03.48:35/ Vols. I, II,
and III.
NSRDS-NBS 36, Critical Micelle Concentra-
tions of Aqueous Surfactant Systems, by P.
Mukerjee and K. J. Mysels, 1971 ($3.75), SDCatalog No. C13.48:36.
NSRDS-NBS 37, JANAF ThermochemicalTables, 2d Edition, by D. R. Stull, H. Prophet,
et al., 1971 ($9.75), SD Catalog No. C13.48:37.
NSRDS-NBS 38, Critical Review of Ul-
traviolet Photoahsorption Cross Sections
for Molecules of Astrophysical andAeronomic Interest, by R. D. Hudson, 1971
($1), SD Catalog No. 03.48:38.
NSRDS-NBS 39, Tables of Molecular Vibra-
tional Frequencies, Consolidated Tables,
by T. Shimanouchi, 1972 (In press), SD Catalog
No. 03.48:39.
NSRDS-NBS 40, A Multiple! Table of Astro-
physical Interest (Reprint of 1945 Edition), by
C. E. Moore, 1972 ($2), SD Catalog No. 03.48:40.
NSRDS-NBS 41, Crystal Structure Trans-
formations in Binary Halides, by C. N. R.
Rao, 1972 (In press), SD Catalog No. 03.48:41.
NSRDS-NBS 42, Selected Specific Rates of
Reactions of the Solvated Electron in
Alcohols, by E. Watson, Jr., and S. Roy, 1972
(In press), SD Catalog No. 03.48:42.
NSRDS-NBS 43, Selected Specific Rates of
Reactions of Transients from Water in
Aqueous Solution, by M. Anbar, M. Bambenek,and A. B. Ross, 1972 (In press), SD Catalog No.
03.48:43.
NSRDS-NBS 44, The Radiation Chemistryof Gaseous Ammonia, by D. B. Peterson, 1972
(In press), SD Catalog No. 03.48:44.
U.S. GOVERNMENT PRINTING OFFICE IR72 0-464 680
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!
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Announcement of New Publications in
National Standard Reference Data Series
Superintendent of Documents,
Government Printing Office,
Washington, D.C. 20402
Dear Sir:
Please add my name to the announcement list of new publications to be
issued in the series: National Standard Reference Data Series — National Bureau
of Standards.
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FORM NBS-114A (1-71)
2. Gov’t AccessionNo.
U.S. DEPT. OF COMM.
BIBLIOGRAPHIC DATASHEET
1. PUBLICATION OR REPORT NO.
NSRDS-NBS 3. Section 6
3. Recipient’s Accession No.
4. TITLE AND SUBTITLE
Selected Tables of Atomic Spectra
5. Publication Date
September 1972
7. AUTHOR! S)
Charlotte E. Moore«.
10. Project/Task/Work Unit No.9. PERFORMING ORGANIZATION NAME AND ADDRESS
NATIONAL BUREAU OF STANDARDSDEPARTMENT OF COMMERCEWASHINGTON, D.C. 20234
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SUPPLEMENTARY NOTES
16.
ABSTRACT (A 200-word or less factual summary of most significant information. If document includes a significantbibliography or literature survey, mention it here.)
The present publication is the sixth Section of a series being prepared in
response to the persistent need for a current revision of two sets of tables
containing data on atomic spectra as derived from analyses of optical spectra.
As in the previous sections. Part A contains the atomic energy levels and
Part B the multiplet tables. The spectra of hydrogen and of the isotopesdeuterium and tritium are included. The form of presentation is describedin detail in the text to Section 1.17.
KEY WORDS (Alphabetical order, separated by s emicolons)
Atomic energy levels, H I, D, T; hydrogen spectra, H I, D, T; multiplet tables,
HI, D, T; spectra HI, D, T; wavelengths, hydrogen spectra H I, D, T.
18. AVAILABILITY STATEMENT
Hxl UNLIMITED.
I I FOR OFFICIAL DISTRIBUTION. DO NOT RELEASETO NTIS.
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UNCL ASSIFIED
20. SECURITY CLASS(THIS PAGE)
UNCLASSIFIED
21. NO. OF PAGES
36
22. Price
40 cents
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